That's okay.... and you are right, in that casual readers may assume something is gospel everywhere, in every situation, just because they read it on the internet. But that goes for almost every piece of information. To everything, there is a caveat. Which is why we have warning labels on toothpicks. "Danger...sharp...do not stick in your eye".
But may I also point out that there is a difference between "MISinformation" and "information of limited application" as far as the information we put out here on the forum? Wouldn't it be nice to see some head to head comparisons of different techniques? Controls? That kind of thing?
I have an experiment that I am running with another group, we are testing the variables of firing kilns of different sizes in different climates. I am making twenty identical pieces of pottery, glazed in exactly the same way, and sending them to participants who will chart their firings, and send them back to compare results head to head. We suspect something that the kiln manufacturers seem to be blind to....a relationship between kiln size and the fugitive colors in low fire ware. We have been discussing our own results with certain underglazes, trying to compare them over the imperfect communication that is the internet, and cannot get close enough to an answer. There is only one way to know for sure.
What I am getting at, with this long winded post, is that telling someone to use a certain mixture of underglaze colors and fire to a certain cone temp would not be "MISinformation", but it COULD be of limited application for them if their kiln is significantly bigger or smaller than mine. Or, possibly, if they live in a different climate whose humidity or temperature can affect the firing time of the kiln. It takes much longer to get to cone temp if you live in Canada, than it does in New Mexico....does that change the color of the result? We think so. We are about to find out definitively.
Joanie