This thread " on natural selection" led to a discussion on Malthus

My view on Malthus was that his theory was a Claim of logic, something which has to be true by necessity and is thus Popper unfalsifiable. This explains why Darwin's rephrasing of his grandfather  (artificial cultivation became artificial selection) was also not testable. 

Malthus, Matthew, Darwin all lifted their ideas from Erasmus Darwin's Zoonomia

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