I am fairly new to this forum but I am repeatably running into the same problem. This is the user who has found a formula or data on the internet which they think can be applied to a problem. They go ahead and post or quote this blindly without giving any thought to its applicability and then insist they are correct because they can refer to some web page. Can we do anything in the guidelines reputation or flagging system to discourage this behavior?
The voting system on answers seems to address the problem there. But it does not apply to comments, Perhaps there should be a flag category a little stronger than not helpful say "just plain wrong". If upheld it could lead to a loss of a little reputation which might just make people think before posting spurious information.
So far I have succeeded in remaining polite but the temptation to call some people idiots is becoming overwhelming.