After seeing There Will be Blood and relishing the now-legendary “I drink your milkshake!” scene, it occured to the Toronto Star‘s Peter Howell (and perhaps a few hundred others) that the “milkshake” line might be an anachronism, since the scene in which it’s spoken is set in 1927 or ’29 or somewhere in there. Howell was under the impression that milkshakes had been invented sometime in the early to mid 1930s.
But he checked Wikipedia’s milkshake page and “lo and behold, not only were they invented but they were a fast-growing fad. On top of which it’s quite plausible that Daniel Plainview was not only drinking other people’s milkshakes, but ones made with newfangled electric blenders. All indicating that Paul Thomas Anderson really did his homework. Impressive.”