english: And then we were able to test them rigorously, in random-assignment, placebo-controlled designs, throw out the things that didn't work, keep the things that actively did.
non_english: Nato smo bili jih bili sposobni rigorozno testirati v naključnm dodeljevanju, placebo kontrolni dizajn, in zavrgli tiste stvari, ki niso delovale in obdržali tiste, ki so.