LSD microdosing experiment: pair 18: placebo then active?

Created by gwern on 2013-02-26; known on 2013-02-27; judged wrong by gwern on 2013-02-26.

• gwern estimated 60% on 2013-02-26
• gwern on 2013-02-26
• gwern   judged this prediction wrong on 2013-02-26.

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