And best of all, we were able, in the last 50 years, to invent drug treatments and psychological treatments. 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.
Y crucialmente fuimos capaces, durante los últimos 50 años, de inventar tratamientos psicológicos y tratamientos de drogas y luego pudimos probarlos rigurosamente -en pruebas diseñadas con asignación al azar y control con placebos- descartar lo que no funcionaba y mantener los tratamientos que efectivamente lo hacían.