It isn't very scientific if a discipline persists in bad research practices, and that's what psychology is still doing. Indeed, it's very hard to get experiment

It isn't very scientific if a discipline persists in bad research practices, and that's what psychology is still doing. Indeed, it's very hard to get experimental evidence for a theory by measuring people, but if you know you can't, then don't do it. Wait until the means to do so become available, and try to find those ways instead. Unfortunately, that's not the state of psych. research. There is of course also a more practical side. For psych and med interventions, you don't need to know how it works. If method A works better than method B, it's a good idea to try A before trying B. However, that research is also difficult, and many papers have been found wrong afterwards. While that's the way to go, it shows that even when attempting to establish superficial effects, the disciplines are failing.