The Adobe flash plug-in is non-free software, and people should not install it, or suggest installing it, or even tell people it exists. - Richard Stallman

It is unfortunate that he still has nonfree software in his computer. He needs to defenestrate it (which means, either throw Windows out of the computer or throw the computer out of the window).

The explanation for "free software" is simple — a person who has grasped the idea of "free speech, not free beer" will not get it wrong again.

Four species of penguins that breed in Antartica [sic] are endangered by global warming. Even I, the only man in the world who can get angry from looking at a picture of a penguin, find this bad news.