Replication needed ∞
“Replication needed” is the ultimate caveat in scientific criticism. It covers all the bases. Everything else is just details. At the end of the day, if promising results cannot be replicated by other researchers, it doesn’t really matter what was wrong with the original research. Either a treatment works well enough to consistently produce impressive results whenever it’s tested … or it doesn’t. Updated article: Most Pain Treatments Damned With Faint Praise.