Double or Nothing?

We all have the chance to make a difference

Doubling your chances of success, of making the bus
Of meeting the right person
Of getting the ultimate special prize

Doubling your chances is pretty good odds
But only if you start with a big chance.
Doubling 50% chance is a guaranteed thing.
Doubling a 1% chance isn't so special.

Everyone has a chance to make a difference
While the principle is the same, the maths isn't.