I read a very interesting paper on the state of the English language a few years ago and there was a great quote in it that I try my best to adhere to.
"Sloppy English leads to sloppy thinking."
Most of my English teachers were some of the dumbest people I have ever met in my life. If this was not the case, I might be able to agree with you on this. The fact some of these well learned idiots were unable to use logic or explain scientific theory. This would seem to be like a good indication of the fallacy of your statement.
Errors in reasoning, what I would think of as 'sloppy thinking' is usually from making poor assumptions or failure to look beyond the superficial teachers of an issue.
To illustrate: When you read that paper did you think why you would like it enough to remember it, or wonder why that person might want to come to that conclusion? Sadly even people trained to evaluate research and logic often find reasons to support their own bias. Much like me wanting to believe that English has little to do with thought. In truth, for normal people language does shape thought some extent, but if language does control though explain expressive aphasia. These people can think and hold normal lives but cant talk well often after an injury to a small part of the brain.
The real problem with thinking today is that people dont. They study grammar not language, and thinkers but not thought.
One reason that this writer doesn't work use 'proper' English on this forum is because people seem more likely to misconstrue what he happens to say using proper grammar than when no care for commas and sentence structure is used. Ironically improper use of grammar seems to induce more thought than otherwise in my experience. :tooth:
The other reason is because the computers at my job suck beyond belief and I cant surf the net without crashing- 50 running processes and 250MB of memory for all of it :eek2:. The perfect example of committee thinking. No I dont work on them.