The term 'revolution' in this context would mean not a sudden mutation but a historical development along the lines of 'the industrial revolution' or 'the Neolithic revolution'.

A sudden mutation into evil, or a slow corruption?

We might expect even a sudden mutation, if so far-reaching as this (a flightless species acquiring flight) to take from three million to twelve million years.

"All human change has been by sudden mutation," Joseph said.

A genius is like a sudden mutation.

History has shown that worldwide epidemics (pandemics) caused by such sudden mutations have killed millions of people in a matter of months.

Ruby: The DNA of a space virus underwent a sudden mutation upon exposure to a laser beam and resulted in DEOXYS.

He remained alive to change and rejuvenate, evolving gradually without sudden revolutionary mutations.

(Universal Motown), are sinewy and full of surprises, like irregular meters and sudden stylistic mutations.

If I am correct, Dismas, then our descent from the Xauens was by an incredible, sudden and single mutation; one that has been mieunderstood both as to effect and direction.