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In #MathsToday we talked about cryptography. First, how cryptographic systems don't matter if you just share your data (there are many examples). Then rot, substitution, one-time pads, Vigenère, Enigma, and finally public-key. #mtbos #ITeachMath

1/6/26, 10:15 pm0 reposts1 like

Jed

@jedediyah.com

1 June

It struck me is that we have talked about Galton, Fisher, Pearson --> Hitler, Watson (IBM), WW2 --> Turing and Enigma, Turing and AI --> IBM and Watson (computer) --> current tech bros & TESCREAL. Tech history is so instructive and insightful. History offers so much benefit to technical curricula.

Jed

@jedediyah.com

1 June

25400496152197968726069309778268949288246846207825351781412320795364369009011394253863307907325504274886438651152265338552397690369938370774031355003154660318291

Jed

@jedediyah.com

1 June

FYI, this big number is the product of two primes. I wonder which two primes!