"We have to take posters at face value.."

Indeed... and I do my best to read not only the words, but to read 'between the lines' and make a reasonable guess at motivation and character. This DOES lead to conflicts as to how to respond.

I cannot let the basic errors in understanding of science go unchallenged, but neither can I condemn a person simply on the basis of what I consider 'wrong' ideas. I almost always react to **ideas** in a forum like this, not to a person.