N(t) = N0e-λt

So you're right: You're not a number. You're a formula, a whole bunch of them, and you live according to formulas/formulae (whatever). On the premise that the deciding principle you know is better than the one you don't, the five that cover it all: http://discovermagazine.com/2012/jul-aug/05-obscure-formulas-that-rule-world