there are certain things in life we'll never be sure about.

The most common one is the end of the world. IT'S MEANT TO BE A SURPRISE. Even if any so-called prediction will tell us otherwise, as soon as someone discovers a date, doomsday will be moved. So get over trying to solve that puzzle. It'll come to us when we're unprepared about it... the best things in life come when we least expect it. That's a quote I'll be dragging down to my grave. ;)