Vincent Gray’s recent contribution on ‘The Scientific Method’ prompts me to respond with an extended set of points on Karl Popper’s ideas. My first article for PSI addressing Popper’s work is found here.
It is refreshing to see reference to the work of Peter Medawar who seems to be neglected by today’s commentators on science including climate science. He has much to say of sound common sense and in my view climate scientists and their fellow travelers (on all sides) would do well to try to take from his writings something of his spirit and humanity.
It is good also to see emphasis on the lessons Karl Popper teaches us but again on Principia Scientific, important parts of his ideas are poorly presented and I feel it is important to keep making points of argument which at first sight may appear pedantic but which, in fact, are pivotal to a proper understanding of Popper’s philosophy and to a proper appreciation of how the empirical science should be conducted.
Vincent presents a set of diagrams that illustrate what he calls the ‘methods approved by Popper”. In fact Popper, to my knowledge, made no such approval and was most clear that for him there was no scientific method. He did prescribe the method of conjecture and refutation as the way to eliminate error.


Because of one inconveniently true sentence in one paper commenting how the lack of measured warming is casting “doubt” on “the continued, even accelerated, warming as claimed by the IPCC project” all the journal has been terminated by the publisher.







But the emotive image is utterly false. CO2 emissions are colorless. But, more crucially, this benign atmopsheric trace gas (< 0.04{154653b9ea5f83bbbf00f55de12e21cba2da5b4b158a426ee0e27ae0c1b44117}) is non-toxic, being the very stuff we exhale as we breath and plants require as food.