Nope. They're being tested for validity, meaning that their existence _as a treatment_ is under test. If it turns out they don't have an effect, will you say "w

Nope. They're being tested for validity, meaning that their existence _as a treatment_ is under test. If it turns out they don't have an effect, will you say "we did have a cure for a moment: leeches; but it was rejected by the regulatory process, therefore bad bureaucrats for showing that it didn't work"? Of course not, that doesn't make sense...if your goal is a cure. (If you're peddling hope, or just looking to make money off quack medicine, OTOH...)