The first thing I did to clean the planet up was to take a shower before going shopping. I even did behind my ears. Then I took the shopping cart and tightened up the wheels and gave it a cleaning too. After that, I did not swear at a single person that was ahead of me on line. Nor did I curse at the idiot behind me who kept bumping me with her cart just because she wanted to give her ugly kid a ride.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.