If anyone else is also curious on why "putting mold on infections" is more good than crumple zones:
They [molds] also play important roles in biotechnology and food science in the production of various pigments, foods, beverages, antibiotics, pharmaceuticals and enzymes. - Wikipedia
My beef with the placement of that item is that it isn't even further down the "actually a good idea" axis. Penicillin -- perhaps the most important medical innovation of the 20th century -- rated less "actually good" than mere laser eye surgery and fecal transplants?! C'mon, Randall!