Journey of a Man Essay Example | Topics and Well Written Essays - 1250 words

Journey of a Man - Essay Example Moreover, I was greatly intrigued by the way physical features of different groups evolved, and flattered that the male sex chromosome played an important part in this research. However, some of Wells’s sayings seemed contradictory to his views. Moreover, I did not like the way the host acted sometimes while conducting the research. Therefore, after watching this documentary, I had mixed opinions about it. During the beginning of the documentary, an explanation is given on Wells’s theory that the birthplace of all humans alive on this planet is the same-Africa. The pride I felt in my ethnicity after discovering this was immense. True, I do not completely associate myself with Africa as my nationality is ‘American’, but I am after all an ‘African American’. This realization also instilled a sense of shame in me due to not having even a bit of patriotism in me for the country where we African Americans are originally from; early in Americaâ€℠¢s history, Africans were brought to America from Africa as slaves but were later given freedom and equality, due to which we are now African Americans. This documentary has made me accept the fact that it does not matter which country I was born in or which country’s nationality I assume. What really matters is that all African Americans know that their great great grandfathers directly originated from Africa, but majority of them forget about this origin. I myself had forgotten this origin until I watched this documentary. This is not the only reason why I am so grateful to this documentary. Thanks to the ground-breaking discoveries made by Spencer Wells, one develops a new perspective of the concept of race. By stating that â€Å"we are all African under the skin†, Wells’s disregards all the old-fashioned concepts of race, such as thinking that people with the same color of skin or language are the same. Spencer puts this point across by exploring how African s migrated to different parts of the world and evolved in different ways, which is why people with similar physical characteristics started to associate themselves with one of these ‘different races’. The documentary disagrees with such associations and I highly agree with this point. I believe that by seeing an individual through ‘racial lenses’, assumptions about that individual would definitely be made according to his/her ‘race’. According to me, this is termed as a kind of discrimination. Being an African American, I myself have been a victim of having assumptions being made about me, such as the time when a grocery owner kept a watchful eye on me while I was buying groceries (just because majority of the shoplifters in that neighborhood are African American). Therefore I really approved of Wells’s opinion that everyone is the same, and not part of ‘different races’. As he says in his documentary, we have the same desce ndant, who was from Africa. However, something about this statement of his made me doubt his personal opinions a bit. By terming us all as ‘Africans’, Wells is in fact calling us a race-something which is contradictory to what his views throughout the documentary are. According to Wells, there is no such thing as a race, but implying that we are

Define the Origins of the Aqualung in Relation to Swim Diving Essay

Define the Origins of the Aqualung in Relation to Swim Diving - Essay Example The open air prototype expelled all exhaled air into the waters. The open air system is commonly used for the recreational diving. The Scuba divers suffers from the risks for decompression problems (divers using surface-supplied compressed air) should they ascend without adequate decompression. However, a mixture of Helium-Oxygen compressed air can help Scuba divers descend deeper as compared to compressed air. The history of scuba diving dates back centuries. Many individuals have been diving underwater throughout the ages probably for a period long as they have been swimming. However, the diving may not have been in the exact form of scuba diving but ushered in the inquiry for dive and remained breathing underwater. In ancient times, such mechanisms as hollow reeds, as well as inflated airbags but had a lot of shortcomings. They had limitations based on depth and the duration the swimmer could remain underwater breathing. Scuba diving has undergone a number of tremendous expansions till the turn of the century where the number of new divers is gradually stabilizing. By 2012, the number of new divers certified was approximately one million. The Scuba diving remains a fledgling and vibrant sport as portrayed by the ever rising evolution of the dive equipment as its associated practices. Over the recent years, the application of dive computers has been standardized effectively integrated into many certification agencies in their training curriculum. The incorporation of the wireless of air consumption into the algorithm of dive computers remains the most fundamental innovation. Accordingly, the incorporation of wireless integration into the diving sport has culminated into a safer diving. The chronology of the scuba diving is quite fantastic. The various civilizations throughout the years have indulged in breath-hold diving, free-diving. The existence of sea items on land and ancient pictures presents the evidence for early