I like DOE because the inverse is E (Engineer). It illustrates an on going challenge in technology where the first question isn't "What capabilities should our resulting systems have? And what constraints are there on our implementation?" (which would be engineering a solution) instead we get the question "What other systems out there seem to solve this problem?", or worse "What other systems have similar inputs and outputs to the ones we have and want?"
DOE
Don't Over Engineer
(which more or less brings us back to KISS principle)