So basically what I didn't tell you is that about 500 million years ago, the organisms started making materials, but it took them about 50 million years to get good at it -- 50 million years to learn how to perfect how to make that abalone shell.
Dakle, ono što vam nisam rekla je da su prije 500 milijuna godina organizmi počeli raditi materijale, ali im je trebalo oko 50 milijuna godina da postanu dobri u tome. Trebalo im je oko 50 milijuna godina da nauče kako usavršiti gradnju te školjke koju danas zovemo petrovo uho.