Wednesday, March 18, 2020

Mammoths and Mastodons - Ancient Extinct Elephants

Mammoths and Mastodons - Ancient Extinct Elephants Mammoths and mastodons are two different species of extinct proboscidean (herbivorous land mammals), both of which were hunted by humans during the Pleistocene, and both of which share a common end. Both of the  megafauna- which means their bodies were larger than 100 pounds (45 kilograms)- died out at the end of the Ice Age, about 10,000 years ago, as part of the great megafaunal extinction. Fast Facts: Mammoths and Mastodons Mammoths are members of the Elephantidae family, including the woolly mammoth and the Columbian mammoth.  Mastodons are members of the Mammutidae family, restricted to North America and only distantly related to mammoths.  Mammoths thrived in grasslands; mastodons were forest dwellers.Both were hunted by their predators, human beings, and they both died out at the end of the Ice Age, part of the megafaunal extinction. Mammoths and mastodons were hunted by people, and numerous archaeological sites have been found around the world where the animals were killed and/or butchered. Mammoths and mastodons were exploited for meat, hide, bones, and sinew for food and other purposes, including bone and ivory tools, clothing, and house construction. Mammoths The woolly mammoth (Mammuthus primigenius), or tundra mammoth. Science Picture Co / Getty Images Mammoths (Mammuthus primigenius or wooly mammoth) were a species of ancient extinct elephant, members of the Elephantidae family, which today includes modern elephants (Elephas and Loxodonta). Modern elephants are long-lived, with a complicated social structure; they use tools and demonstrate a wide range of complex learning skills and behavior. At this point, we still dont know whether the wooly mammoth (or its close relative the Columbian mammoth) shared those characteristics. Mammoth adults were about 10 feet (3 meters) tall at the shoulder, with long tusks and a coat of long reddish or yellowish hair- which is why youll sometimes see them described as wooly (or woolly) mammoths. Their remains are found throughout the northern hemisphere, becoming widespread in northeast Asia from 400,000 years ago. They reached Europe by the late Marine Isotope Stage (MIS) 7 or beginning of MIS 6 (200,000–160,000 years ago), and northern North America during the Late Pleistocene. When they arrived in North America, their cousin Mammuthus  columbi (the Columbian mammoth) was dominant, and both are found together at some sites. Wooly mammoth remains are found within an area of some 33 million square kilometers, living everywhere except where there was inland glacier ice, high mountain chains, deserts and semi-deserts, year-round open water, continental shelf regions, or the replacement of tundra-steppe by extended grasslands. Mastodons Mastodon model in the Museum of Natural History Science, Cincinnati Museum Center at Union Terminal. Richard Cummins / Lonely Planet Images / Getty Images Mastodons (Mammut americanum), on the other hand, were also ancient, enormous elephants, but they belong to the family Mammutidae and are only distantly related to the wooly mammoth. Mastodons were slightly smaller than mammoths, between 6–10 ft (1.8–3 m) tall at the shoulder), had no hair, and were restricted to the North America continent. Mastodons are one of the most common species of fossil mammal found, particularly mastodon teeth, and the remains of this late Plio-Pleistocene proboscidean are found across North America. Mammut americanum was primarily a forest-dwelling browser during the late Cenozoic of North America, feasting primarily on woody elements and fruit. They occupied dense coniferous forests of spruce (Picea) and pine (Pinus), and stable isotope analysis has shown they had a focused feeding strategy equivalent to C3 browsers. Mastodons fed on woody vegetation and kept to a different ecological niche than its contemporaries, the Columbian mammoth found in the cool steppes and grasslands in the western half of the continent, and the gomphothere, a mixed feeder who resided in tropical and subtropical environments. Analysis of mastodon dung from the Page-Ladson site in Florida (12,000 bp) indicates that they also ate hazelnut, wild squash (seeds and the bitter rind), and Osage oranges. The possible role of mastodons in the domestication of squash is discussed elsewhere. Sources Fisher, Daniel C. Paleobiology of Pleistocene Proboscideans. Annual Review of Earth and Planetary Sciences 46.1 (2018): 229–60. Print.Grayson, Donald K., and David J. Meltzer. Revisiting Paleoindian Exploitation of Extinct North American Mammals. Journal of Archaeological Science 56 (2015): 177–93. Print.Haynes, C. Vance, Todd A. Surovell, and Gregory W. L. Hodgins. The U.P. Mammoth Site, Carbon County, Wyoming, USA: More Questions Than Answers. Geoarchaeology 28.2 (2013): 99–111. Print.Haynes, Gary, and Janis Klimowicz. A Preliminary Review of Bone and Teeth Abnormalities Seen in Recent Loxodonta and Extinct Mammuthus and Mammut, and Suggested Implications. Quaternary International 379 (2015): 135–46. Print.Henrikson, L. Suzann, et al. Folsom Mammoth Hunters? The Terminal Pleistocene Assemblage from Owl Cave (10bv30), Wasden Site, Idaho. American Antiquity 82.3 (2017): 574–92. Print.Kahlke, Ralf-Dietrich. The Maximum Geographic Extension of Late Pl eistocene Mammuthus Primigenius (Proboscidea, Mammalia) and Its Limiting Factors. Quaternary International 379 (2015): 147–54. Print. Kharlamova, Anastasia, et al. Preserved Brain of the Woolly Mammoth (Mammuthus Primigenius (Blumenbach 1799)) from the Yakutian Permafrost. Quaternary International 406, Part B (2016): 86–93. Print.Plotnikov, V. V., et al. Overview and Preliminary Analysis of the New Finds of Woolly Mammoth (Mammuthus Primigenius Blumenbach, 1799) in the Yana-Indigirka Lowland, Yakutia, Russia. Quaternary International 406, Part B (2016): 70–85. Print.Roca, Alfred L., et al. Elephant Natural History: A Genomic Perspective. Annual Review of Animal Biosciences 3.1 (2015): 139–67. Print.

Sunday, March 1, 2020

The Life of Astronomer Claudius Ptolemy

The Life of Astronomer Claudius Ptolemy The science of astronomy is one of humanitys oldest sciences. No one knows quite when the first people looked up and began to study the sky, but we do know that very early people began noting the sky thousands of years in the past. Written astronomical records were recorded in ancient times, often on tablets or walls or in artwork. That was when observers began charting what they saw in the sky. They didnt always understand what they observed, but realized that the skys objects move in periodic and predictable ways. Claudius Ptolemy with an armillary sphere he used to predict solstice dates and other celestial sights. Public domain, via Wikimedia Commons. Claudius Ptolemy (often called Claudius Ptolemaeus, Ptolomaeus, Klaudios Ptolemaios, and simply Ptolemeus) was one of the earliest of these observers. He systematically charted the sky to help predict and explain the motions of the planets and stars. He was a scientist and philosopher who lived in Alexandria, Egypt nearly 2,000 years ago. Not only was he an astronomer, but he also studied geography and used what he learned to make detailed maps of the known world. We know very little of Ptolemys early life, including his birth and death dates. Historians have more information about his observations since they became the basis for later charts and theories. The first of his observations that can be dated exactly occurred on March 12, 127. His last recorded one was February 2, 141. Some experts think his life spanned the years 87 – 150. However long he lived, Ptolemy did much to advance science and appears to have been a very accomplished observer of the stars and planets.   We get a few clues about his background from his name: Claudius Ptolemy. Its a mixture of the Greek Egyptian Ptolemy and the Roman Claudius. Together, they indicate that his family was probably Greek and they had settled in Egypt (which was under Roman rule) for some time before his birth. Very little else is known about his origins.   Ptolemy, the Scientist Ptolemys work was quite advanced, considering that he didnt have the types of tools that astronomers rely on today. He lived in a time of naked eye observations; no telescopes existed to make his life easier. Among other topics. Ptolemy  wrote about the  Greek geocentric view  of the universe (which put Earth at the center of everything). That view seemed to quite nicely put humans at the center of things, as well, a notion that was hard to shake until Galileos time. Ptolemy also calculated the apparent motions of the known planets. He did this by synthesizing and extending the work of Hipparchus of Rhodes, an astronomer who came up with a system of epicycles and eccentric circles to explain why Earth was the center of the solar system. Epicycles are small circles whose centers move around the circumferences of larger ones.  He used at least 80 of these tiny circular orbits  to explain the motions of the Sun, the Moon, and the five planets known in his time. Ptolemy expanded this concept and made many fine calculations to fine-tune it.   This drawing by astronomer Jean Dominique Cassini was influenced by the epicycles that Ptolemy refined by his mathematics and observations of the sky. public domain This system came to be called the Ptolemaic System. It was the linchpin of the theories about objects motions in the sky for nearly a millennium and a half. It predicted the positions of the planets accurately enough for naked-eye observations, but it turned out to be wrong and too complicated. As with most other scientific ideas, simpler is better, and coming up with loopy circles wasnt a good answer to why planets orbit the way they do.   Ptolemy the Writer Ptolemy was also a prolific writer in the subjects and disciplined he studied. For astronomy, he described his system in his books that make up the  Almagest (also known as Mathematical Syntaxis). It was a 13-volume mathematical explanation of astronomy  containing information about the numerical and geometrical concepts behind the motions of the Moon and known planets. He also included a star catalog that contained 48 constellations (star patterns) he could observe, all with the same names that are still in use today. As a further example of some of his scholarship, he made regular observations of the sky at the time of the solstices and equinoxes, which allowed him to figure out the lengths of the seasons. From this information, he then went on to try and describe the motion of the Sun around our planet. Of course, he was wrong because the Sun does not orbit Earth. But, without more knowledge of the solar system, it would have been very difficult for him to know that. However, his systematic approach to charting and measuring sky events and objects was among the first scientific attempts to explain what happens in the sky. The Ptolemaic System was the accepted wisdom about the motions of the solar system bodies and the importance of Earth in that system for centuries. In 1543, the Polish scholar Nicolaus Copernicus proposed a heliocentric view which put the Sun at the center of the solar system. The heliocentric calculations he came up with for the movement of planets were further improved by Johannes Keplers laws of motion. Interestingly, some people doubt that Ptolemy truly believed his own system, rather he merely used it as a method of calculating positions. A page of Ptolemys Almagest translated and reproduced by Edward Ball Knobel. public domain   Ptolemy was also very important in the history of geography and cartography. He was well aware that Earth is a sphere and was the first cartographer to project the spherical shape of the planet onto a flat plane. His work, Geography  remained the principal work on the subject until the time of Columbus. It contained amazingly accurate information for the time and given the difficulties of mapping that all cartographers raced. But it did have some problems, including an overestimated size and extent of the Asian landmass. Some scholars think that the maps Ptolemy created may have been a deciding factor in Columbuss decision to sail west for the Indies and ultimately discover the continents of the western hemisphere. Fast Facts about Ptolemy Not much is known about Ptolemys early life. He was a Greek citizen living in Alexandria, Egypt.Ptolemy was a cartographer and geography, and also worked in mathematics.Ptolemy was also an avid skygazer. Sources Claudius Ptolemy, www2.stetson.edu/~efriedma/periodictable/html/Pm.html.â€Å"Claudius Ptolemy.†Ã‚  Ptolemy (about 85-about 165), www-groups.dcs.st-and.ac.uk/~history/Biographies/Ptolemy.html.â€Å"Notable People.†Ã‚  Who Was Claudius Ptolemy, microcosmos.uchicago.edu/ptolemy/people.html.? Edited and updated by Carolyn Collins Petersen

Friday, February 14, 2020

Identify three important conditions for successfully initiating a Essay

Identify three important conditions for successfully initiating a price increase (Pricing Strategies) - Essay Example However, in general context most of the companies price their products in such a way which allows them to remain affordable to the clients and offers them a certain societal value. Pricing strategies come mainly in the form of new product pricing, product mix pricing and price-adjustment strategies. Among the aforementioned forms of pricing, a number of strategies can be employed by the company to price its products. The pricing strategies are described below. New Product Pricing Strategies. These strategies are mainly divided into two types, namely market skimming pricing and market penetration pricing. Market skimming pricing entails setting high price for a product during its launch and slowly reducing the price with the passage of time. On the other hand, market penetration pricing is about setting a low price for a newly launched product and then gradually increasing it as the products reaches the growth stage in its life cycle. Product Mix Pricing Strategies. Companies have several options to price their product mix. It purely depends on the intentions of the company. Some of the most commonly used pricing strategies in this context are product line pricing, product bundle pricing, captive product pricing, optional product pricing, and by-product pricing. Each of these strategies considers certain aspects in pricing the product. Price-Adjustment Strategies. The price of a product needs to be adjusted at times due to the changing situations and several customer differences. Some of the commonly used strategies in this context are geographical pricing, international pricing, discount and allowance pricing, psychological pricing, segmented pricing, promotional pricing, and dynamic pricing. After companies develop the pricing structures of their products, they often face a condition when they are required to modify the prices due to a specific reason. Nevertheless, price changes are initiated

Saturday, February 1, 2020

Caligua Roman Empire Essay Example | Topics and Well Written Essays - 750 words

Caligua Roman Empire - Essay Example While most likely not intended to last a lifetime, the name stuck and most of history remembers him under this name. His reign only lasted from 37 to 41 A.D., ending bloody as many of the reigns of Emperors of Rome would end. For most of Caligula’s young life, he was not in Rome. He spent his time on the campaigns of his father, his childhood outside of the socialization of the center of his homeland’s culture. In addition, his father, according to writings by the historian Tacitus, was well known for disobeying orders from Tiberius, delaying his return to Rome and taking his army where he desired, thus instilling in Caligula an â€Å"apparent disregard for prioritizing State interests over personal ones†, a point that became clearly a part of Caligula’s reign (Adams 34). Germanicus’ predilection towards the Hellenistic culture also influenced the young Caligula, many of those aesthetics appearing during his reign. Hellenistic culture was a fusion of Greek, Middle Eastern and Eastern cultures which was sometimes interpreted for its decadence, as much as for its classical philosophies, as described by Green as being â€Å"bourgeois, decadent, and materialistic (7). Germa nicus was popular, however, and when he died in 19 A.D. there was an enormous amount of grief among the Roman citizens (Adams 98). Caligula returned home to Rome with his mother and siblings after the death of his father. While the time of his youth does not specifically suggest that he was intended to be the heir of Tiberius, his later experiences before the death of the Emperor make it clear that he was then considered his heir. During his teen years, Caligula bore witness to a plot by praetorian Sejanus in which his mother and elder brothers were arrested and eventually killed. Caligula, now in line for leading the empire, did not fall under Sejanus as the plot was uncovered and he was arrested and put to death by Tiberius in 31 A.D (Burns 53). Shortly after, Caligula was made the official heir of Tiberius and would ascend to wear the laurels at a very young age. Caligula became emperor of Rome on 18 March 37 AD at the age of twenty-four. At first his reign seemed like a break from the austere and conservative reign of Tiberius, but soon the senate became unhappy with his excesses. In the first year of his re ign, Caligula put an end to the paranoia of the trials of treason and the public executions quieted for a time. Tiberius had been a dark and troubled ruler in his later years, creating an atmosphere of fear and treachery. However, from what ever cause, Caligula was falling into deeper and darker madness which manifested in all kinds of debaucheries and blood sport. He had his two greatest supporters, the praetorian prefect Macro who had helped him in holding his inheritance as Emperor and another great supporter, Tiberius Gemellus put to death (Adams 152). His excesses fell into categories of shameful behavior, some of which have been highly influential in characterizing ancient Rome as a time of great debauchery. It is said that he had incestuous relationships with his sisters, having a great love affair with his sister Drusilla who is thought to have been his true love. While he exiled two of his sisters on islands, Drusilla was made his heir (Tinsley 245). It is also hinted at th at he had made part of his palace

Friday, January 24, 2020

Farewell to Manzanar by Jeanne Wakatsuki Houston Essay -- essays resea

Farewell To Manzanar In the true story "Farewell to Manzanar" we learn of a young girl's life as she grows up during World War II in a Japanese internment camp. Along with her family and ten thousand other Japanese we see how, as a child, these conditions forced to shape and mold her life. This book does not directly place blame or hatred onto those persons or conditions which had forced her to endure hardship, but rather shows us through her eyes how these experiences have held value she has been able to grow from. Jeanne Wakatsuki was just a seven year growing up in Ocean Park, California when her whole life was about to change. Everything seemed to be going fine, her father owning two fishing boats, and they lived in a large house with a large dining table which was located in an entirely non-Japanese neighborhood. The surprise attack on Pearl Harbor by the Japanese was the moment Jeanne's life was critically altered. This started WWII and all Japanese were seen as possible threats to the nations safety. It is not difficult to see, but difficult to justify this view, and therefore Jeanne Wakatsuki, just a child, was now seen as a monster. Her father was immediately arrested and taken away, being accused with furnishing oil to Japanese subs off the coast. And now, Jeanne left without a father, her mother was trapped with the burden of Jeanne's rapidly aging grandmother and her nine brothers and sisters. Too young to understand, Jeanne did not know why or where her father had been taken. But she did know that one very important part of her was gone. Jeanne's father was a very strong, military-like, proud, arrogant, and dignified man. He was the one who was always in control, and made all the decisions for the family. He grew up in Japan, but left at the age of seventeen, headed for work in Hawaii, and never again went back. Leaving his own family behind and never contacting them ever again. But now it was time for Jeanne's family to do something. They found refuge at Terminal Island, a place where many Japanese families live either in some transition stage or for permanent residents. Jeanne was terrified. " It was the first time I had lived among other Japanese, or gone to school with them, and I was terrified all the time." Her father, as a way ... ...ruly come to know a place: Farewell." This says it all. She had finally been able to see that Manzanar was one giant stepping stone she had climbed, and that gave her worth, so she could feel at peace with herself. Her life had really begun at Manzanar, but she isn't about to let it end there. In conclusion, this story was well written and I could sympathize with every trial and tribulation she encountered. Some may say she didn't value her Japanese heritage enough or was pitying herself for being Japanese. But she, in my view is a hero because she took everything that was imposed on her and endured through it. She was able to accept herself through a kind of spiritual growth, which was both revelational, and inspirational. I only hope that one day I can make some sense of the things gone wrong in my life, or at least grow from them. Jeanne is a woman now, who as a child was thrown around in a racial roller coaster, and can accept herself as an important part of society and life, rather than needing others to accept it for her. Note: I really enjoyed this book and the next time I head out to Mammoth Lakes I will definitely try and find Manzanar.

Thursday, January 16, 2020

Comparison of Miss Havisham and Lady Macbeth

Throughout both ‘Great Expectations’ and ‘Macbeth’ surroundings are used to influence and define Miss Havisham’s and Lady Macbeth’s characteristics. These surroundings are not only physical, but also psychological; found in their relationships and trauma from past events. Although both women are presented in different forms Lady Macbeth is also strongly influenced by her physical surroundings. Like Miss Havisham, her home is metaphorical of her characteristics. She lives in a great castle from which we never see her leave.Like the castle she first comes across as strong, powerful and intimidating with strong walls, yet we later see these crumble and leave her as nothing but a wreck of what she used to be. The castle also lures King Duncan into a false sense of security the same way Lady Macbeth does, this can be seen when he describes her as ‘Fair and noble hostess’ and states ‘This castle hath a pleasant seat’ showing that he feels comfortable and unsuspecting of both. This is ironic because later that very same night he is murdered, highlighting his naivety. This shows how like Lady Macbeth the castle can also conceal the evil within.Pathetic fallacy is often used in Macbeth to emphasise the atmosphere of the events occurring. For example on the night of Duncan’s murder, when Macbeth and Lady Macbeth are in a state of paranoia, ‘someone knocks at the gate’ . This makes them feel as though they have been discovered by someone and there is almost knocking on their conscience, ultimately leading to Lady Macbeths loss of sanity. The next morning we learn that ‘The night has been unruly’ and ‘some say the earth/ Was feverous and did shake’ reflecting the earth shaking events of the night prior, and further impressing the guilt on Lady Macbeth, influencing her mental state.Another influence on Lady Macbeth appears to be the witches. When we are first intr oduced to her character she appears to be speaking in incantation which mirrors that of the witches: ‘Come thick night, And pall thee in the dunnest smoke of hell’ This suggests that the witches have some sort of influence over her, or are possessing her so that she can carry out their wishes of over throwing the King, it also shows that she does not fear the religious consequences of her actions.She also goes on to call on spirits ‘Come, you spirits’, this gives the impression that she believes in the superstitious, and not only that but sees it as a source of help. She does not fear it like the vast majority of people in the 1600s. Miss Havisham is also greatly influenced by her psychological and emotional surroundings. The paramount influence over her life was her relationship with Compeyson, as this is what led to her incessant need for revenge, strained relationship with Estella and subversion from conformity.The enormous impact that Compeyson jilting Miss Havisham had on her perception of love can be seen when she describes love as ‘Giving up your soul to the smiter-as I did’. The use of the word smiter emphasises just how deeply she was hurt; her heart was not just broken, but deliberately crushed. She never heals from this pain so dedicates her whole life onwards to breaking men’s hearts. She even goes to the extent of raising Estella to do this ’’You can break his heart. ’’. Yet she shows signs of regretting bringing Estella up ‘so hard and thankless’ and robbing her of the ability to love, like Compeyson did to her.This failing relationship leads her further into depression, but does not stop her need to inflict pain on Pip, suggesting she cannot control her psychological impulses. Miss Havishams failed relationship led her to rebel from the stereotypical Victorian woman, who is supposed to be a married, dutiful wife, well presented and loving. She is quite the opp osite of this as a mad spinster, but is left to her own devices due to her wealth and power Throughout Macbeth we see Lady Macbeth change from a foreboding, deeply ambitious and manipulative women, to a regretful and guilt ridden soul.This change creates a sense of sympathy in the eyes of the audience as it is her own actions which lead to her ultimate demise. Unlike Miss Havisham, Lady Macbeth is married and is perceived by outsiders as a typical loyal wife. However, within her relationship it can be seen that she has also rebelled from expectations. In Lady Macbeth's mind being a woman is a great weakness; she construes femininity as compassion and kindness, preventing her from ever being as powerful as a man.She labels her husband as â€Å"too full o' the milk of human kindness,† to commit treason, and for this reason she calls on the spirits to â€Å"unsex† her and â€Å"Stop up the access and passage to remorse†, as she thinks this will allow her to carry o ut acts of evil. She also manipulates Macbeth into doing what she wants: ‘When you durst do it, then you were a man’. This shows that she knows how to use what could be seen as the female method of achieving power, this being manipulation, to further her supposedly male ambitions.This position of power can again be seen in the use of imperative verbs when she talks to Macbeth: ‘look like the innocent flower’, ‘Leave all the rest to me’, displaying her authority and control over the situation. The play implies that women can be as ambitious and cruel as men, yet social constraints deny them the means to pursue these ambitions on their own. Lady Macbeth’s guilt is the crucial psychological surrounding which influences her downfall. Although her will to kill the King was previously so strong, after the murder she begins to slide into madness.She and Macbeth undergo a role reversal, he seems to lose all sense of remorse, whilst her feminine attributes, which she tried so hard to eradicate, take over, leaving her trapped in her guilt. This ironic turn of events can clearly be seen when Lady Macbeth initially comforts Macbeth by saying â€Å"a little water clears us of this deed†, yet she soon comes to realise this is not the case. Her guilt consumes even her subconscious mind leading to her sleep walking, whilst in this state she questions â€Å"will these hands ne’er be clean? and goes on to recount the events of the day of the murder. This illustrates how she is constantly reliving that day, desperately trying to change what happened but can’t. This desperation to clean the blood from her hands eventually drivers her insane, and the only way she can free herself from this mental torture is to end her life. Although Great Expectations and Macbeth were written in different centuries and in different forms; Macbeth being a concentrated play, written around 1604, and Great Expectations being a length ily novel from around 1860.They were both considered quite outrageous and innovative at the time, due to their previously unspoken themes of madness, superstition and matriarch. As shown in my essay, Miss Havisham and Lady Macbeth are similarly influenced by their surroundings. Both women used people as their puppets in order to carry out their desires, and both descended into madness through losing their control of their puppets. However Lady Macbeth was power hungry and was willing to take down anyone to satisfy her ambition, whereas Miss Havisham wanted purely revenge, and thought what she was doing was bringing justice.The former is more manipulative and done purely for selfish reasons, so her madness was self inflicted and grew as time progressed. While the latter was done in response to the pain she was caused, meaning her madness was less calculated, but was constant since the cause of pain. Both are middle aged and wealthy women who have rebelled from expectations, however M iss Havisham rebelled due to a traumatic event in her life and does not try to conceal her atypical lifestyle. Whereas Lady Macbeth tries to mask this, and use her apparent innocence to her advantage.

Wednesday, January 8, 2020

The Flaws and Shortcomings of African Historiography Essay

The Flaws and Shortcomings of African Historiography History is formed through a combination of personal experiences, psychological state, personal objectives, relation with the interviewer, position in society and many other factors that cannot be scientifically monitored and accounted for. Thus, no historian has been able to filter through the many layers they need to in order to arrive at an accurate account of history. What â€Å"personal narratives† and â€Å"life histories† provide are numerous examples of the complexities and ambiguities that accompany any reconstruction of African history. Each account of history does not offer a different perspective from which one may view a particular event or time, simply because no two accounts have†¦show more content†¦But that is all it is, interesting! With enough disclaimers and ‘considering’ any claim, theory, or historical account becomes valid history. Relationships Between Interviewer and Subject: As recognition and acceptance of the subjects’ ability to hold back and alter information increased, so did historians’ emphasis on the quality of the relationship between interviewer and interviewee. For example, Bozzoli made a point of reducing the physical and ethnical variations between interviewer and interviewee. In order to increase the comfort level of the subject, and in turn, get more honest and personal information, Bozzoli used female interviewers with racial and ethnic ties to the subject whereas Mbilinyi had a much more direct approach. Alagoa, Bozzoli, andShow MoreRelatedOne Significant Change That Has Occurred in the World Between 1900 and 2005. Explain the Impact This Change Has Made on Our Lives and Why It Is an Important Change.163893 Words   |  656 Pagesprimates in central Africa gave birth to the first hominids some 5 million years ago. Movement made possible the appearance of every hominid species since then, including our own some 150,000 years ago, and the spread of Homo sapiens from our African cradle to every major area of the planet since 50,000 b.p.. These migratory currents have connected all the continents since 1500 C.E., helping create the political, social, and ethnic landscapes of the world today. Premodern societies were far