Cheops law is an adage or epigram that is typically stated as, Nothing ever gets built on schedule or within budget.Jon Fripp, Michael Fripp, Deborah Fripp, Speaking of Science (Newnes, 2000), , p. 192. Excerpts available at Google Books.Arthur Bloch, Murphy's Law: the 26th Anniversary edition, (Penguin, 2003), , p. 61. Excerpts available at Google Books.

Written by Robert A. Heinlein; attributed to his fictitious character Lazarus Long in Time Enough for Love (1973)Robert A. Heinlein, Time Enough for Love (Penguin, 1988 reprint), . Excerpts available at Google Books. and later in The Notebooks Of Lazarus Long.

See also Hofstadter's law: "It always takes longer than you expect, even when you take into account Hofstadter's Law."

References