Comments by "Iain Mc" (@iainmc9859) on "Why You DON’T Descend From All Your Ancestors…" video.

  1. There's two basic points here. If you want to look at it in visual terms, it might help. Genealogically - You are the result of all of your ancestors. You are the point 🔽 that all of your ancestors combine to on your family tree. (You are highly likely to have ancestors from multiple continents and countries) Genetically - The DNA that you have inherited from each ancestor gets less and less with each generation that passes 🔼the further back in time you go. (You can't claim to be intellectually or racially superior because your GGGGGGGGGG Granddad was a Viking called Eric) These, of course, are not nice neat broad equilateral triangles, regardless of whether you are speaking genetically or genealogically. Politely put, there's overlap. If there is an attempt to keep bloodlines limited the triangles become narrower (isosceles) both genetically and genealogically, leading to in-bred diseases. The same happens with pockets of populations in outlying areas with limited transport. (Don't sleep with your cousin because her bus is cancelled and she can't get home tonight). What did strike me recently regarding genetic 'rinsing' over seven to ten generations is this might be evolutions way of eliminating debilitating conditions that are passed on from parents to their children, eg If your great great Grandmother had cerebral palsy genes that might not affect your generation of siblings at all. (I'm not medically trained, it just crossed my mind) Reminder - Its the last day of the Para-Olympics today
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  2.  @davidsoulsby1102  I read Arthur Koestler's book 'The Act of Creation'. It made me think differently about evolution. Its often three steps forwards and four steps back, with a lot of wasted energy on developing lifeforms that just aren't going anywhere. Random, Irrational and not in any way Intentionally Progressive. Not Gaia, not God , just pure luck and coincidence. Maybe my idea that genetic 'rinsing' is just wanting to see some sort of order in the Universe
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