European leaders behave like supplicants to an almighty Trump. Putin just sees him as a protege | Rafael Behr
A hungry pigeon given food at frequent but irregular intervals will develop weird rituals – tics, dances, erratic head jerks – in the hope of summoning another morsel. BF Skinner, the psychologist who first demonstrated this effect in 1947, described the birds adopting “a sort of superstition … as if there were a causal relation … Read more