gedanken-designing, having blank stares. Making fag packet sketches and making a few table napkin blue prints was pretty much how me and a friend of mine convinced a friend of his that we could build him an oil drilling rig from the scrap he had laying around back in 1980.
The problem today is when I go off in the Frank zone and get that blank stare, my wife has developed the nasty habit of asking what I am thinking about creating a Kip[ling effect. Which aggravates me to no end.