Um... it is dangerous to use this word "random" and "chance" all over the place in these discussions: evolution is not a random process. One random element is introduced at the beginning: the occurrence and nature of a mutation. This random element is then immediately shaped and controlled by powerful governing forces, most importantly, natural selection.
Somehow those arguing against evolution take this one random input, and assuume that there must also be a random process and output as well. They then go on to apply this myth of "chance" to every other aspect of scientific study that contradicts their beliefs. Astrophysics, geology, climatology, physics, astronomy... And then they feel that they have the authority to label this all as indisputable scientific proof, which of course, they don't and it's not.
I'm sorry, I have just been embittered by the struggle of re-explaining the same things to hordes of deaf ears, one person at a time.
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