Quote
Any reasonable person knows that the chance of error-mutation creating highly-complex, symmetrical, self-reproducing machines is astronomically low; virtually impossible.


Even if the odds astronomically low, it would have to happen at some point in time...and it would happen eventually unless the universe is only a very short lived phenomenon and came to an end before this hypothetical event could occur.

If there is any chance at all it could occur...eventually it would occur.