"If a system is not broken, you don't fix it".

but damaged machinery will continue to malfunction if its problems are neither diagnosed nor fixed.

The value of "If it ain't broke, don't fix it" is not just that it prevents you from messing up things that are going well, but that it also causes you to focus instead on fixing the things that are real problems.

The repair system exists to keep the machinery operating but no provision had been made to repair the repair system.

If something is wrong, fix it if you can. But train yourself not to worry. Worry never fixes anything.

If you need a machine and don't buy it, then you will ultimately find that you have paid for it and don't have it.

You cannot fix what you don’t know is broken. You cannot improve your life, your relationships, your game, or your performance without feedback.

You can't do anything unless you detect the fault.

As a rule, whatever you need to optimize, don't do.

If you don’t know how to fix it, please, stop breaking it.

You never cure structural defects; the system corrects itself by collapsing.

Young people must break machines to learn how to use them; get another made!

Not everything needs to be fixed

When there is a problem, do not just keep going with the intention of fixing it later. Stop and fix the problem now.