Taking children seriously is based on the teachings of Karl Popper, whose style of rationality is not the "LessWrong-Preferred" (tm) flavor, having been supplanted by Jaynes-style Bayesianism.

(There have been arguments back and forth on LessWrong about Popper preferring falsification above attempting to show something can meaningfully be considered to be true, with some stating that this is not true Popperism, with others claiming that this is a No-True-Scotsman argument.) Because of the controversy, mentioning Karl Popper on LessWrong is a way to generate lots of sound and fury without much meaningful discussion.