https://old.reddit.com/r/typewriters/comments/1oincod/can_someone_tell_me_what_yearmodel_this_is/

This highlights a question I've had for a while: What is the best encoding method for very quickly memorizing a deck of cards while still keeping a relatively small ceiling on the amount of space to memorize and work out in advance.

I want to revisit it and do the actual math to maximize the difference between the methods.