I created this topic because somebody I know had told me that Galactus was a giant cloud (like in the movies) and he wouldn't back down, despite me showing him a FF comic.
Technically he may be right, Galactus has been shown to look different from the standard version when viewed by non human species before, so a race of aliens could see Galactus as a cloud LOL
As for the general question, I don't tend to find people who get their knowledge from other sources a problem, after all that was me at one point. I lived in a area that didn't have great access to comics,and we didn't have the internet for me to probe further, so a lot of my info came from tv shows and movies. Most of the time I let little mistakes go (especially with kids), as annoying them tends to make them not want to read further, and the stuff that annoys me or that are major changes I tend to bring up as interesting facts. Most people are ok with that, the ones who can't admit they are wrong tend to do that in more than just comics, so I tend to already know whether that will be a problem or not.