> The Lindy effect proposes, simplified, that the longer something has been around, the longer it will probably stay around still. I think there is a linguisti

> The Lindy effect proposes, simplified, that the longer something has been around, the longer it will probably stay around still. I think there is a linguistic ambiguity here. What is meant by "the longer something has been around"? Longer with respect to what? If you mean to say if A has been around longer than B, then A will stay around longer than B (in expectation), then this law is commutative with respect to A and B and what you specify as "opposite" holds. If you mean to say if something has been around for t then it will stay around for some f(t) where f is an increasing function, then again what you specify as "opposite" holds.