Category Archives: Science And Society

CAGW Skepticism

“My personal path“:

…being English I knew all about the vagaries of the weather, but the warnings about CAGW always seemed to be made in the most certain terms. Was it really possible to predict the climate so assuredly? The global climate must be an extremely complex system, and very chaotic. I had recently heard about financial institutions that were spending vast sums of money and picking the very best maths and programming graduates, but still were unable to predict the movements of financial markets with any confidence. Predicting changes to the climate must be at least as difficult, surely? I bet myself climate scientists weren’t being recruited with the sort of signing-on bonuses dangled by Wall Street. I also thought back to the ice age scare, which was not presented as an absolute certainty. Why the unequivocal certainty now that we would only see warming, and to dangerous levels? It all started to sound implausible.

The whole thing also seemed uncertain on the simple grounds of common sense. Could mankind really force such a fundamental change in our environment, and so quickly? I understood that ice ages could come and go with extreme rapidity, and that following the scare of my childhood, no one seriously claimed to be able to predict them. So in terms of previous natural variability, CAGW was demonstrably minor in scale. It seemed obvious that if natural variability suddenly switched to a period of cooling, there would be no CAGW no matter what the effect of mankind on the atmosphere. Even more fundamentally, how could anyone really be certain that the warming then taking place wasn’t just natural variability anyway? The reports I read assured me it wasn’t, but rarely in enough detail to allow me to decide whether I agreed with the data or not.

The other thing that really got me thinking was seeing the sort of people that would appear on television, proselyting about the coming tragedy that it would imminently become too late to prevent. Whether from charities, pressure groups or the UN, I knew I had heard their strident and political use of language, and their determination to be part of the Great Crusade to Save the World before. These were the CND campaigners, class war agitators and useful fools for communism in a new guise. I suddenly realised that after the end of the Cold War, rather than slinking off in embarrassed fashion to do something useful, they had latched onto a new cause. The suggested remedies I heard them espouse were always socialist in approach, requiring the installation of supra-national bodies, always taking a top-down approach and furiously spending other peoples’ money. They were clearly eager participants in an endless bureaucratic jamboree.

And remain so.

Superman

Could he punch someone into space?

My answer is no, without even reading the link. I think that he could throw someone there (though they’d get cooked from the air friction on the way up), and they’d come back down unless they had escape velocity when they got to the top of the atmosphere, because there wouldn’t be an orbital insertion impulse. But if he punched them hard enough to do so, his fist would probably just take their head off. If he did it through their solar plexus, it would probably just go right through. People don’t consider the structural issues associated with superheroes and normal-human interactions with them.

Now Ralph Kramden, on the other hand… But then, he never carried out the threat.