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26. Rocket
1 year ago
18. Things - Nick Farr Created a Polyalphabetic Substi…
1 year ago
17. Thank You
1 year ago
You know when you had your notes taken from you by the teacher and read aloud in class? If you'd had one of Nick's Polyalphabetic Substitution Cypher Slide Rules (PASCSR) you could have avoided that!

Learn more about the PASCSR and about all the Things in this video series at brepettis.com/blog

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