I'll be glad when you're expert enough to the know the difference between know and no.1. The person who washed the top window on the back of your house is a novice.
The person who washed the top window on the back of a 100 story skyscraper is an expert.
2. My mistake, won't happen again.
3. I have know idea what you know.
I do know that I worked 600' above the ground on the outside of a skyscraper .
Does that make me an expert?
Yes it does...