JetBlue Dictionary -

Change (verb) : to mess with something that is already working and then act surprised when it stops working.
Example: “We thought the vacation software needed a slight tweak, but when we failed to test it before running the annual vacation bid we learned from the union that the program is jacked up. Hard stop, do over. Rebuild the entire vacation bidding timeline… And now the employees confidence in the management team erodes even further.
Actual savings - a couple bucks.
Actual cost to the airline: priceless.