lesson number six has comm program many products used on construction sites are composed of chemicals or compounds that are hazardous to your health and physical well-being.
Too much of a good thing can kill you. Including sunny weather.
Brute strength will not win in a war with physics. Smart design predicts the resonance of a building and sidesteps the waves
Do not be a dummy, make sure your tools are solidly secured, and put some protection between you and them—in case they ain't.