So instead of the offer last time, the behavioural economics unit funded by an eccentric billionaire is offering you a different choice. Now there are no guaranteed wins. To decide if you win, they will roll a fair 100-sided die to get a number from 1-100. If you choose the first bet and the die reads 60 or less, you win; for the second bet if it reads 9 or less, you win. However, in the first case they'll tell you only whether you won or lost, while in the second case they roll the die in front of you and you see the exact number they used to decide.