No reason to feel bad because you make the same mistake more than once, but you should feel bad for the reasons you make the same mistake repeatedly. And remember that you learn by gaining new knowledge, not by simply making mistakes as your analogy below attempts to describe.
>
> You may have already noticed the tie-in with evolution. Genetic copying
> makes mistakes (mutations). The ones that don't work get corrected
> (natural selection).
No, you're conflating, or confusing, genetic copying error correction code systems with "evolution" and "natural selection".
Genetic copying sometimes makes mistakes that error correcting codes can not repair, and sometimes results in mutations that can be neutral, beneficial or deleterious when expressed in the phenotype. The mutations that "don't work" are not "corrected", they are deleterious.
Your analogy is tainted by your preconceptions. Mutations don't learn from their mistakes.
>A few manage to work even better. Functional
> complexity advances; some might call it progress. But a crucial part is
> the correction of mistakes.
>
You are probably right, genetic error correction has always, since first life, been crucial to survival. Too bad you don't recognize that the genetic copying system has no way of learning, as you do when you make mistakes, such as reading books or being convinced by logical arguments.
You might consider also that you have made many mistakes in this post, such as claiming that functional complexity increases ("advances").
Most evolutionists would likely claim that evolution does not tend to increase complexity, nor does evolutionary theory predict that, but just the opposite, when it comes to "functional" complexity.