Blaming someone else will only put the solution further out of reach. - Gerald M. Weinberg

Repeatedly curing a system that can cure itself will eventually create a system that can't.

The Hawthorne Effect (“the process of being observed often motivates people to better performance”) can be the bane of scientific observation.

Jane easily shifts among activities — testing for discovery, pinpointing, locating, determining significance, repairing, troubleshooting, and testing to learn. As long as she continues to serve her customers, it doesn't really matter which task she performs at any given time.