> Hard to tell if a tool is useful if there is not high quality research backing up the claim. That's obviously not true. Show me the high quality research st

> Hard to tell if a tool is useful if there is not high quality research backing up the claim. That's obviously not true. Show me the high quality research studies backing up the idea that a hammer is useful for hammering nails or that a flat-head screwdriver is useful as a improvised chisel. The way to tell if a tool is useful is if you use it and it works for your application.