No one can predict the future. The percentage might be low but doesn't mean impossible. I was a gangster since 15 years old and 16 years old start collect protection fee from students (4 schools in total). I never go to U. But today I'm a lead engineer work for the world biggest oil company in one of their major project (of cause not in Malaysia). Meanwhile the genius study machine at my era whom surrounded with all the top people, got full A(s) from SPM, grad at UM with flying colors now she is working as MLM agent + selling one of the famous water filter.  Environment is a major thing that can affect a person's behavior and made him/her likely to be success or failure but the outcome might not solely based on this so call formula or whatever you name it. Both uncle Lim and Robert Kwok are the example you should look at and probably you also have some friends who were came from poor family, naughty and not good in exam but now they become boss while you still work as a white collar kuli.