Yes. The science is very clear that the climate system is complex, chaotic and non-linear, which obviously makes predictions of future climate very unreliable.
I would disagree with that, Ray, though you are certainly right that the system is complex, chaotic and non-linear. As is a roulette wheel, for any one roll of the ball, which bounces, ricochets, and hops from one cup to the next. But with all that, the overall edge for the house (with a standard wheel and rules) is about 5.26%. And that's an extremely reliable 5.26%. So while any particular outcome in roulette or the weather is subject to all kinds of vagaries, the overall trend tends to be quite predictable -- perhaps not as much with climate as with roulette, but at this point, we have enough data to clearly discern a particular direction. We can't say that climate change means it'll be warmer in West Jesus, Texas, in particular, because of those complexities, but we can confidently say that Texas, over some longer period of time, will become warmer.
This is not easy stuff to get around. For example, some reasonably credible people have suggested that if it gets warm enough on earth as a whole, the melting of the Greenland glaciers may quicken to the point that a flood of cool, lighter (because fresh) water will enter the North Atlantic, floating on top of, and muffling the normal effect of the warm Gulf Stream. If that happens, Europe, which derives quite a bit of warmth from the Gulf Stream, could suffer a prolonged cold climate, until the flow of fresh water abates. (Europe is unusually warm because of the Gulf Stream -- it's useful to remember that Paris is about the same latitude as Winnipeg, Canada, and London is actually further north than Winnipeg.) A cooler Europe wouldn't mean that the earth as a whole is getting cooler, or that Europe will be permanently cool, it's that the cool weather there would be a product of the warmer earth.
I have some ideas about people who deny climate change, but it would be impolite to bring them up here, so I won't.