It seems I will be continuing this blog as a collection of the most random thoughts I had... Though I read a lot, I am by no means an expert in everything. Use your best judgment when considering what I have written below.
My most recent rant comes as a response to this video:
Don't get me wrong, Kurzgesagt is a great video maker that typically uses excellent scientific sources and animates them in a way that everybody can understand. But this time, it seems they used a source of information that represents some rather outdated theories regarding the evolution of humans.
I usually have a thing for determining what is the truth out of a series of information sources that may not be entirely compatible. It's the nature of critical thought, right -- taking information from multiple sources and using reasoning to determine the truth.
One of the sources I felt were the most informative, was this image out of wikipedia:
From multiple sources you can read that during the course of human evolution, multiple subspecies coexisted for the same time. The chart above indicates the number of individuals and how widespread they were, by the width of the blue area on the chart, whereas the height indicates time. In other words, where Homo Sapiens may have lived in limited numbers at the same time as Neandarthals, they did not live in the same places as Neandarthals and may have therefore never mixed.
The reasons for this were that Homo Sapiens was at the time not sufficiently technologically advanced, to make up for their biological limitations in regards to what environments they could survive in. Neandarthals were better adapted to cold climates and Denisovans were more adapted to high altitudes. Therefore in their specific environments, both subspecies could easily out-compete Homo Sapiens.
Over time however, Homo Sapiens evolved to be more technologically advanced and spread around the world, now coexisting in the same places as both Neandarthals and Denisovans. These subspecies may have then blended into the more dominant Homo Sapiens subspecies, passing on their unique traits into the common human gene pool. Though it is impossible to reconstruct skin tone out of fossil records, I will let you ponder upon the fact, that white skin is an adaptation to colder climates with less UV radiation and that Homo Sapiens was most likely black.
I just feel like these conclusions, which anyone can come to, should not be ignored.