Is there a word for people incapable of thinking?
That is the way it is done since ever. Some offer simplifications: they are, though, for people incapable of thinking.
Is there a word to express that equivalently (or close to equivalently)? The sentence should look like something like this, with ADJECTIVE standing in for the desired word (however, variations will also be considered):
[. . .] they are, though, for ADJECTIVE people.
To clarify, the wanted meaning surely wants to “attack” or to “strike” the addressees but without degenerating into vulgar insults, thus maintaining its fine and elegant form.
Best Answer
How about imbecilic?
A somewhat less offensive term might be unreasoning.
Although perhaps unreasonable is more suited to your incapable criterion.
I had another idea: whilst it doesn't really convey a connotation of incapability, a word which is often used in such circumstances is thoughtless.
All definitions from thefreedictionary.com