Along with the lead I wish there was a program for framing, roof math, and stairbuilding (along with specifics in other trades...) I've been in a bunch of houses recently (still looking!) And am so discouraged. What were people thinking?

Anecdotal - my wife took the little one to a kids b-day party thius weekend. Most of the housing stock in Burlington has lead in it. 2 of 3 kids have tested positive for higher levels of lead in their system - despite parents who seal up paint and vacuum with HEPA filtered devices. It gets everywhere over time - outside from all the exterior painting that chips and gets into the soil and is then eaten, inside on the windows, radiators, etc..