> In this case, we can only determine whether it's correct after it's too late to do anything about it.

If only there was a mental concept of doing things correctly the first time. At the very worst manageable.

I understand your comment but I am tired of babysitting people to have some “cop on” and it is just getting worse. I’m a bit despondent.

Despite the well-established mental concept of doing things correctly the first time, mistakes continue to be made. Perhaps by people unaware of the mental concept.

I don't know what "cop on" means.

I've been feeling a bit despondent about the situation as well.