LifeItself

 Dear Friend, I do not mention your name, for you can be anyone on the whole Earth. You could have any color of skin, and belong to any tribe and clan. You could give offerings to any Gods and believe in any myths. In modern impersonal terms, you could be of any race, nationality, religion and political creed, and be of any sex whatsoever.  It took us a million years to develop that big, complex brain of ours. Some 100,000 years ago, in the harsh, frigid climate of Europe and Asia, there were perhaps a few hundred of us left on the brink of extinction.  But we did not go extinct then and here we are, my friend and brother, all 7.8 billion of us. Gregory, John Walter 1896 - 1968, The Great Rift Valley. London: Frank Cass & Co. Ltd. This Sketch by Gregory from his expedition to East Africa in 1892-3. shows "Mount Kenya from the Kapte Plains west of Machakos". Learned people say that we must have come from Africa, mostly from the Great Rift Valley : "Our species, Hom...

In this post, I explain the logic of wishful thinking and plain denial that rules on the Earth in most matters that matter (population growth, power (= energy per unit time) supply, water supply, food supply, progressing destruction of planetary ecosystems, and so on).   I imply throughout that without an ample and continuous supply of power as liquid fuels, chemical feedstock and electricity, the societal activities we take for granted are impossible. I start from formulating a grand postulate that is self-evident, given the finite volume of the Earth's lithosphere and the law of mass conservation: ( The Grand Postulate ) If all hydrocarbon resources in the Earth’s mantle are finite (= A) then there is peak rate of hydrocarbon production   (= B) [as these resources are gradually depleted]: A implies B or A → B This Grand Postulate is logically equivalent to its contrapositive: if not A then not B:  (not A = ~A)  → ~B: If hydrocarbon resources are...