Well it can only be a suspicion, Clint, as I guess that you have no real method of evaluating the truth. Neither do most of us. I don't. I spent all of my working life as a scientist - as a biologist working mainly on marine fisheries. I can tell you an awful lot about the population dynamics of molluscs and crustaceans - and it will all be based on hard-won facts laced with a very healthy dose of "well, we don't really know that yet, and probably never will unless more targeted research is done". Ask me about climate science, and I have no more expertise to offer than the person who delivers my groceries or empties my refuse bin.
I do know someone who really does possess some expertise, though. My daughter is a physicist, currently based in Australia and working on the dynamics of the Antarctic ice-cap. OK, you don't know me, and you may not believe what I post here - but I am utterly convinced that the research that she and her colleagues is doing is just as valid as my work (pretty low-level in my case!) on fisheries ever was. Big difference - no-one suggested that over-exploitation of fish was a "scam", just a lie that would go away and we could keep fishing stocks without any danger of extinction. Why? Because they couldn't possibly get away with it. The annihilation of herring, mackerel and cod stocks was there for all to see.
But, with climate change, you can get away with it. I have no doubt that the work of my daughter and her colleagues represents mankind's best evaluation of the present situation. But it is easy to criticise because it is not, and can never be, certain. What I ask myself, though, is this. If the best science available to mankind at the moment is overwhelmingly suggesting that we have a very serious problem here, then isn't it obviously time to take a step back and think? In particular, to think of the risk involved. If we change a lot of our industrial behaviour, it may cost societies a lot of money. If we then stabilise global warming, and all turns out well, it might have been worth it - we will still have a decent economy. If we do nothing, and the planet seriously warms up, then we're likely to be stuffed. The whole thing - the economy, civilisation as we know it, might well go t**s up. Why on earth risk it??