The world out there can often seem as though it is hurtling to hell in a handcart: people are refusing safe vaccines for a dangerous disease, extreme weather events caused by global heating are on TV nightly, billionaires are shooting themselves into the stratosphere in penis-shaped spacecraft while record numbers of the precariously employed rely on food banks. Looked at from this perspective, humanity as a whole doesn’t seem very rational. Hence why, surveying the idiocies of his own age, Jonathan Swift amended Aristotle’s definition of humans as “the rational animal” to his own sardonic formulation animal rationis capax – the animal capable of rationality.
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