Free Essays on Intersection Of Differences

An Intersection of Differences Samuel R. Delaney’s The Einstein Intersection is a part fantasy, part science fiction novel exploring a fresh re-telling of the story of Orpheus- a legendary Thracian poet and musician whose music had the power to move even inanimate objects and who almost succeeded in rescuing his wife, Eurydice, from Hades. Delany uniquely recreates this myth and adds modern day legends such as Ringo Star, Elvis and pop-icons to the mix, providing the reader with a link to the past and a reminder of recurring archetypes of the human experience. It is a mythic tale of a strange future Earth inhabited by an alien race who have assumed human form- at least, initially there was a strong resemblance. Cultural taboos prohibit any pair from producing more than one offspring, and the occasional pilgrimage to a high Rad site encourages an ever larger gene pool and with every generation divergence from the human mold increases. With the human form the aliens also acquire human myths and mannerisms. Somehow humanity’s baggage of archetypes is resonating from beyond the grave. The aliens are compelled to assimilate the rationale of this world: from Greek mythology to legendary Ringo Starr- the silent one, the demi-god of rhythm. The title of the book is made relevant as part of Delany’s usage of mythology by an explanation late in the book of the importance of Gà ¶del and Einstein and the possible future implications of their work: Wars and chaoses and paradoxes ago, two mathematicians between them ended an age and began another for out hosts, out ghosts called Man. One was Einstein, who with his Theory of Relativity defined the limits of man’s perception by expressing mathematically just how far the condition of the observer influences the thing he perceives. [†¦] The other was Gà ¶del a contemporary of Einstein, who was the first to bring back a mathematically precise statement about the vaster realm beyond t... Free Essays on Intersection Of Differences Free Essays on Intersection Of Differences An Intersection of Differences Samuel R. Delaney’s The Einstein Intersection is a part fantasy, part science fiction novel exploring a fresh re-telling of the story of Orpheus- a legendary Thracian poet and musician whose music had the power to move even inanimate objects and who almost succeeded in rescuing his wife, Eurydice, from Hades. Delany uniquely recreates this myth and adds modern day legends such as Ringo Star, Elvis and pop-icons to the mix, providing the reader with a link to the past and a reminder of recurring archetypes of the human experience. It is a mythic tale of a strange future Earth inhabited by an alien race who have assumed human form- at least, initially there was a strong resemblance. Cultural taboos prohibit any pair from producing more than one offspring, and the occasional pilgrimage to a high Rad site encourages an ever larger gene pool and with every generation divergence from the human mold increases. With the human form the aliens also acquire human myths and mannerisms. Somehow humanity’s baggage of archetypes is resonating from beyond the grave. The aliens are compelled to assimilate the rationale of this world: from Greek mythology to legendary Ringo Starr- the silent one, the demi-god of rhythm. The title of the book is made relevant as part of Delany’s usage of mythology by an explanation late in the book of the importance of Gà ¶del and Einstein and the possible future implications of their work: Wars and chaoses and paradoxes ago, two mathematicians between them ended an age and began another for out hosts, out ghosts called Man. One was Einstein, who with his Theory of Relativity defined the limits of man’s perception by expressing mathematically just how far the condition of the observer influences the thing he perceives. [†¦] The other was Gà ¶del a contemporary of Einstein, who was the first to bring back a mathematically precise statement about the vaster realm beyond t...

Evolution of Hair Color

Evolution of Hair Color Imagine a world with only brunettes in it. That was the world when the first human ancestors first started to appear as primates adapted and speciation created the lineage that would eventually lead to our modern-day humans. It is believed the very first hominids lived on the continent of Africa. Since Africa is directly on the equator, sunlight shines directly down throughout the entire year. This impacted evolution as it drove the natural selection of pigments in humans as dark as possible. Dark pigments, like melanin, help block harmful ultraviolet rays from penetrating into the body through the skin and hair. The darker the skin or hair, the more protected from the sunlight the individual is. Once these human ancestors started migrating to other places throughout the world, the pressure to select for skin and hair colors as dark as possible let up and lighter skin colors and hair colors became much more common. In fact, once the human ancestors reached latitudes as high north as what is known today as the Western European and Nordic countries, skin color had to be much lighter in order for the individuals living there to get enough Vitamin D from the sunlight. While darker pigmentation in skin and hair block unwanted and harmful ultraviolet rays from the sun, it also blocks other components of sunlight that are necessary for survival. With as much direct sunlight as countries along the equator get on a daily basis, capturing Vitamin D is not an issue. However, as human ancestors migrated farther north (or south) of the equator, the amount of daylight varied throughout the year. In the winter, there were very few daylight hours in which the individuals could get out and ob tain the necessary nutrients. Not to mention it was also cold during these times which made it even more unappealing to get out during the daylight at all. As these populations of migrating human ancestors settled in these colder climates, pigments in the skin and hair started to fade and give way to new color combinations. Since hair color is polygenic, many genes control the actual phenotype of hair color in humans. That is why there are so many different shades of colors seen in different populations throughout the world. While it is possible that skin color and hair color are at least somewhat linked, they are not so closely linked that various combinations are not possible. Once these new shades and colors emerged in various areas around the world, it started to be less of a natural selection of traits than a sexual selection. Studies have been done to show that the less abundant any given hair color is in the gene pool, the more attractive they tend to be for suitors. This is thought to have led to the proliferation of blonde hair in Nordic areas, which favored as little pigment as possible for maximum absorption of Vitamin D. Once blonde hair began to be seen on individuals in the area, their mates found them more attractive than the others who had dark hair. Over several generations, blonde hair became much more prominent and proliferated over time. The blonde Nordics continued to migrate and found mates in other areas and hair colors blended. Red hair is most likely the result of a DNA mutation somewhere along the line. Neanderthals also most likely had lighter hair colors than those of their Homo sapien relatives. There was thought to be some gene flow and cross-breeding of the two different species in the European areas. This probably led to even more shades of the different hair colors.

MD4 Assgmnt 1 Essay Example | Topics and Well Written Essays - 250 words

MD4 Assgmnt 1 - Essay Example The criticism on PowerPoint is also focused on a state of boredom and fatigue of the slide-based presentations. This boredom can be attributed to poor planning by the presenter. Failure to arrange your presentations in time can create a bad presentation. Failure to know to know the audience makes it tricky for the presenter to tailor the content. If the tone fails to go in line with the display, then it becomes uneasy for the audience to get the picture of your presentation. This can only be achieved by planning what to present to the audience before you create your visual aid. One also needs to develop a straightforward outline that visibly develops the main points. This should be followed by creating visual aids to support your intended message. One should also use visual aids in moderation where need be. These aids should also be made observable to the whole audience. One must also ensure that you are talking to the audience but not the aid. The substance of aid should be explained when one first show it. Continuity of the presentation is needed when making a presentation. This assists the audience to get the big depiction of your presentation. Visual continuity also helps to keep the presentation in