LSD microdosing experiment: pair 12: placebo then active?

Created by gwern on 2013-01-18; known on 2013-01-19; judged wrong by gwern on 2013-01-18.

• gwern estimated 40% on 2013-01-18
• gwern on 2013-01-18
• gwern   judged this prediction wrong on 2013-01-18.