We don’t think enough about what we do. We don’t think enough about what results are, and what results on other people are, and how the ricochet goes on and on.
But every action we take is rather like walking along a mountain path in avalanche country. A mis-step will knock some pebbles down the slope; perhaps it will only knock ten or twenty other pebbles loose, but perhaps it will knock loose a sufficiently large rock that there will be a noise.