Maybe it is like xkcd footnote: "Warning: this comic occasionally contains strong language (which may be unsuitable for children), unusual humor (which may be u

Maybe it is like xkcd footnote: "Warning: this comic occasionally contains strong language (which may be unsuitable for children), unusual humor (which may be unsuitable for adults), and advanced mathematics (which may be unsuitable for liberal-arts majors).". Many crazy things do not work for "normal adults".