On days with caffeine, my average happiness during the day was higher than days with placebo.

Created by niplav on 2023-06-19; known on 2023-12-31; judged right by niplav on 2023-06-26.

• niplav estimated 65% on 2023-06-19
• PseudonymousUser estimated 80% on 2023-06-20
• niplav   judged this prediction right on 2023-06-26.