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I hope that this work is self-explanatory

A bombe cribAn obscure paper, but a wonderful view into Turing’s mind and the practical problems associated with cracking the Enigma daily: CRITIQUE OF RUNNING SHORT CRIBS ON THE U. S. NAVY BOMBE. The snarky jabs at builders who don’t really understand the day-to-day operation of the system will be very familiar to anyone who designs a lot of code. (Note that this paper is freely available only for a limited time. The Cryptologia paywall will rise again at the end of the year.) The first paragraph really sets the tone. The gem that provided my title is near the bottom:

“We are reather surprised to hear that you are able to find the keys, given that a message when deciphered says VVVBDUUU. Our experience shows that with a ‘crib’ as short as 8 letters there are always far too many sets of keys consistent with the data, so that whatever method may be used for discovering the dkeys, the time required to test these solutions out further becomes prohibitive. To illustrate this I have enciphered VVVBDUUU with a random chosen key viz wheel order 457, English Ringstellung RWH, pre-start window position SZK and Stecker A/P, B/Y, C/L, E/Q, F/X, K/R, M/W, N/T, O/V, S/Z, giving YFZONMTY. I then imagined that

Y  F  Z  O  N  M  T  Y
V  V  V  B  D  U  U  U

was a crib that I had to solve, but that I knew the wheel order and Ringstellung: I tried out the hypothesis that the pre-start window position was the right one (SZK) and also the five which follow it (allowing correctly for turnovers) viz TAL, TAM, TBN, TBO, TBP, and found that with pre-start TBP there is a solution with V/J, F/G, Z/H, Y/E, U/X, M/L, T/K, D/P and either B/S and O/W or B/W and O/S. The ‘unsteckered alphabets’ for the relevant positions of the machine are shown in Fig 1, and the working in Fig 2. I hope that this work is self-explanatory. Each column of letters consists of steckers of the letters VFZYUMT which imply one another on account of the crib.”