english: It's based on this great cognitive-science research that says if we can master 10,000 hours of effortful study at anything by the age of 21, we will be virtuosos at it.
non_english: Zasnovana je na istraživanju na polju kognitivne nauke o tome da, ako savladamo 10 000 sati napornog učenja bilo čega, do 21. godine, bićemo virtuozi u tome.