first 10 years - there's some problems here that maybe we should think about doing something about it.

second 10 years - ok heh heh, well the stuff we were talking about I guess you guys thought it was a joke but really we think there might be a cause for concern and we should somehow rein it back a notch. Please?

third 10 years - really, we're serious. Things cannot continue like this there will be real problems look at all the data that we have been amassing since we started talking about it.

forty years in - are you people kidding me? I am really starting to doubt some of your people's intentions are in the right place. This has civilization threatening consequences, at the worst maybe even extinction of human life. We need to get a handle on this now, look at the data. The people who say the data is lying are themselves lying or at worst very confused.

50 years in - We're trying to save these neanderthals and they're stupid/tricked by evil so they're going to end up killing us all.

Now I realize that someone doesn't like to hear that they're stupid or evil, but when the subject under discussion is extinction of human life and you don't want to support the political campaigns to do something about it because of the tone of that campaign?

That's like that one time my friend was walking around in the start of a hurricane hitting shore (not knowing anything because somewhat insular) and the cop said hey jerk get inside it's a hurricane and it could kill you! If my friend had then taken that warning and said well, I don't like his tone I think I will just walk around some more, when he finally died I guess everyone would think well he was stupid, and if he said I'm gonna make all these school kids walk around with me, they would have said well he was evil.

And of course if we were really to be accurate we are at least 70 years in on warnings that human activity was negatively affecting the climate at a serious level.