Both modern day apes and humans descended from a common ancestor and no one was needed to make a decision.
You state this so positively.
So makes TWO evolutionary jumps:
One to the human linage and one to the ape line.
Modern medicine does NOT believe in evolution.
If it did; there would be nothing known as a birth ‘defect’; merely ‘Evolution’ trying something new.
You are talking to the wrong person bro. I don’t believe in evolution in any way, shape or form. Not for a second. The only evolution I will accept, if one wants to call it that, is two dogs might produce puppies that are different colors, or slightly different shapes, but they never stop being dogs. You are entitled to your own opinion. I just don’t accept it.