But even waves don't actually 'die out' they just become a different form of output.
Like either another wave (bigger / smaller) or a tide (which erodes the shorelines every year).
The effect of each individual wave might be minimal, but if all waves stopped it would be a big impact.
Take the example of Climate Change. If I choose to turn of all my lights and conserve energy, it will have a some, albeit small, effect, but why should I bother when everyone else is wasting so much?
If the whole of the UK chose to conserve energy, it would have a slightly bigger effect, but why should we bother when the US doesn't care anyway?
But if i stopped, and that made my neighbour stop, and so on, and so on, until the whole country decided it was a good idea, maybe the US would reconsider.
Small changes leading to big things... But the key is: LONG-TERM.
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