Perhaps punctuated equilibrium?

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Maybe the changes that we make in our operating systems, and the changes that these force upon our use of various programs, are the spurts of change that biological scientists identify as the catalysts of evolution. In other words, all was perhaps well and good as long as we didn't make changes in our systems, but once we did, the unfit could no longer survive, and this in turn initiated an entire reorganization of our resources.

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Go to: Left by the wayside, or
Go to: A task of the past, or
Go to: Tools I've known and loved ... and often abandoned.