@MontereyJack,
I remember when I was first introduced to it at a quiet sort of land arch student group gathering at one couple's apartment (me embarking on career 2 or 2.5, but so were all the rest, including probably the teachers who were there), all lolling about on sofas and chairs with wine and snacks. Suddenly, we had at least four addicted people among us... it was a kind of lightening.
The guy of the couple was also interested in locksmithing, and eventually switched to that.. very smart fellow re puzzles, etc.