We do live in an age of intellectual obeisance. After the U.S. pulled out of the Paris climate accord, the CBC's flagship science program Quirks and Quarks ran a story featuring a burning-Earth graphic and a headline claiming that President Trump was ignoring "all of the science." Everyone knows that this assertion is false. We know it because dissenting scientists write books and blogs, and because their enemies maintain blacklists. The meaning of the word all is immutable. It cannot be made to signify some, or much, or even 97 per cent. It forecloses on inquiry, banishes heresy, and insists upon proselytization. We must call it what it is. It is intellectual tyranny.