When you put "ism" after a word, you create a doctrine. To indoctrinate is to put a doctrine into someone, i.e., to teach uncritical acceptance of dogma. To be doctrinaire is to seek to apply a theory or doctrine in all circumstances without regard to practical considerations. It's no accident that we use the word "environmentalism," because its adherents are anything but scientific. They are ideologues masquerading as scientists. Don't fall for it. Read Dr John J. Ray's blog on a daily basis to see environmentalism debunked, defanged, and demolished. Here is a taste.
Environmentalism
Posted at 7:18 PM CT on Sunday, 29 February 2004