"I will try to express myself in some mode of life or art as freely as I can and as wholly as I can, using for my defense the only arms I allow myself to use -- silence, exile, and cunning." -- James Joyce
Another example. These signs are up all over town:
I have no idea if expanding this compressor is a good idea or not. And I guarantee you that 90% of the people putting up these signs don't either. What they do know is that all of the "caring" sort of people have them up, so they had better too.