Avoid it at your peril. The cat's not even sick. (HT to C. J. Cherryh)
If you don't know how it works, find out.
If you're not sure if it will work, try it.
If it doesn't make sense, play with it until it does.
If it's not broken, break it.
If it might not be true, find out.
And most of all, if someone says it is none of your business, prove them wrong.