english: Again, working upwards, since the 1960s and 1970s, we've tried, again, desperately to turn off molecules that operate between nerve cells -- serotonin, dopamine -- and tried to cure depression that way, and that's worked, but then that reached the limit.
non_english: Znovu pôjdeme smerom nahor. Od 60. a 70. rokov sme sa znovu  zúfalo snažili vypnúť molekuly, ktoré pracujú medzi nervovými bunkami, ako sú sérotonín, dopamín, a takto sme skúšali liečiť depresiu, čo aj fungovalo, ale potom sme dosiahli strop.