Blue eyed peoples have a common ancestor right?

[Alexanderr]

How is this possible than a random guy fucked so many humanoids?

One guy doesn’t need to fuck a lot of people.
Say, I have 5 children. If all 5 children had 2 children, I’d have 10 grandchildren and if all 10 of those had 2 children, I’d be the great grandfather of 20 people. In total, in just three generations I’d have 35 descendants. Now, imagine that for hundreds of generations.
It’s essentially exponential growth.

 

[Zygos4Life]