Russell's dabbling with Pyramidology attracted some attention from a well-known writer. Martin Gardner discusses how cherry-picking the relationships and fudging the measurements ("pyramid inches") can manufacture amazing coincidences at will, how Russel borrowed liberally from Smythe (and further fudged the data to predict 1874, then fudged it again to arrive at 1914).
"Judge J. F. Rutherford, who succeeded Russell after the pastor died in 1916, eventually discarded Pyramidology entirely. Writing in the November 15 and December 1, 1928 issues of The Watchtower and Herald, Rutherford delivered a double-barreled blast against it, and advances many ingenious arguments that the so-called Altar in Egypt was really inspired by Satan for the purpose of misleading the faithful... The sect now discourages the sale and reading of Russell's writings, and although the members still believe the Millennium is about to dawn, no definite dates are set."
"The ability of the mind to fool itself by an unconscious "fudging" on the facts--an overemphasis here and an underemphasis there--is far greater than most people realize. The literature of Pyramidology stands as a permanent and pathetic tribute to that ability."
[NB: originally published in 1952, long before the "Stay alive 'til 75" frenzy]
-- Fads and Fallacies in the Name of Science (second edition: 1957), Martin Gardner, Dover Publications, p. 182