For a long time, my skepticism about catastrophic climate change did not take the form of “it could not happen,” or “human civilization has nothing to do with changes in climate.”

My skepticism was prompted, repeatedly, by activists and scientists who kept expressing certainty where certainty could not be had; were given to ignoring and even conspiring to ignore alternative explanations of the effects witnessed; were seemingly uninterested in the reliability of climate data or in questions concerning the relevance of the data they fixed upon rather than other possible data sets.

In all this, I never doubted that terrestrial climate was changing — though I have been dubious, off an on, about the exact shape of the trend lines and whether the climate was indeed ineluctably warming.

Indeed, when activists and scientists were calling climate trends “global warming” I was calling it “climate change”; when they switched I got suspicious.

But my chief problem has been that those most concerned about climate change refused to engage in anything like a stance of curiosity in public, always eschewing the rhetoric of inquiry for the rhetoric of conclusions, especially when confronting long-term trends. The reason I have always believed that climate is changing is that I know history and have read a lot of the science of prehistory, and climate goes in cycles. What climate change scientists have been caught doing is trying to erase the Medieval Warming Period from the record and certainly from the public conversation, and have treated the Little Ice Age as if it were best not to linger over — for fear, apparently, that people might recognize it for what it was, a LITTLE ICE AGE, a very cold period from which we have been emerging for the last 200 or so years.

I used to make a big deal about those two facts: medieval warming and early modern-period cooling. But now what it impresses me most? The facts relating to the end of the last Ice Age — 11,000 years ago or so — which were catastrophic to the American megafauna and to sea levels and climate patterns worldwide. If someone is concerned about current climate change, I would expect to see a lot more interested in past climate change. The fact that I do not suggests to me that they are not really interested in climate change as a subject, but only in current trends — and even that not much. For only a rather stupid person would try to consider current phenomena without reference to past phenomena.

Every climate change activist I’ve met, and most of the scientists I have watched online and on TV, strike me as specialized and not very wise — at best. Most strike me as fools. Or knaves.

And yet, climate change may very well be an important issue. And there might be some out-of-the-box things we could do to reduce human contributions to great, worldwide alterations longterm weather events and patterns.

But as long as activists and scientists try to prove too much while restricting their focus, they will lose their battle.

This is worse than “crying wolf” when there is one. This is like “crying wolf” when it is a swarm of locusts attacking you, and standing around doing nothing but crying.