This is consistent with the fact that an observation requires a measurement and, therefore, between observations, the unobservable ψ evolves in an unobservable way (according to Schrödinger's equation). In connection with this important remark, Bell [142] could state that the fact that a so-called hidden quantity “rather than ψ, is historically called a hidden variable, is a piece of historical silliness.”

But no man is likely to profound tbe Ocean of that Doctrine

weak resolutions; weak virtue

So the author, after seeking vainly between the editions of 1938 and 1965 a peg on which to hang his Thermidor, in the end gave up and labeled the Russian case permanent revolution, without, however, explaining how this aberrant outcome of the Bolshevik fever came about.