How to explain the sentence "no mistakes and no reactive power"?

This sentence should be two sentences separated by commas.

Nothing is merit, which means that this person has not made any mistakes and is already merit. This may be related to his occupation, such as occupational diseases such as finance. There is no way to measure performance, as long as you don't make mistakes. Don't make mistakes, have a good professional level, and nothing is merit.

And the work is not worth it, that is to say, even if you made a contribution, you made a mistake, and there is no way to offset the two.