english: So you could really say that researchers trying to understand the cause of disease without being able to have human stem cell models were much like investigators trying to figure out what had gone terribly wrong in a plane crash without having a black box, or a flight recorder.
non_english: Tako da slobodno možete reći da su oni istraživači koji pokušavaju  da razumeju uzrok bolesti, a da pri tome nemaju model  od humanih matičnih ćelija, prilično nalik istraživačima  koji pokušavaju da shvate šta se loše desilo u avionskoj nesreći, a da pri tome nemaju crnu kutiju ili snimak leta.