That's a laudable idea (and to be fair, doctors do make decisions like this all the time), but the trouble is twofold: 1) placebo effects and 2) expectancy effe

That's a laudable idea (and to be fair, doctors do make decisions like this all the time), but the trouble is twofold: 1) placebo effects and 2) expectancy effects. Humans are really bad at remembering both successes and failures, we tend to only remember the instances where something worked and forget the times it didn't. Additionally, doctors belief in a treatment will cause them to over-interpret the successes of said treatment, and potentially change their interactions with patients who do and don't get the treatment. Hence we have clinical trials, where the analysis is done by people not involved in the treatment, and neither patients nor practitioners know who got what treatment.