You can save a lot of time but knowing not what not to do. Knowing what not to do can sometimes be even better than knowing what to do. For instance, if you supervise people and you bug the pee out of them and are mean to them or micromanage them, you will get LESS out of them.
We ALL have to contend with the dummy factor or frustration factor, like being in the wrong line and having to start over at the end of another line.
don’t do dumb or mean things….. learn what NOT to do.
Pro 15:1 A soft answer turns away wrath, but a harsh word stirs up anger. (ESV)