The next Memory Research Group is tomorrow, June 18 at 12 ET on the Protocol Institute Discord.

We'll be reading a light essay by Sachiko Kusukawa, “A Manual Computer for Reckoning Time,” from the exhibition catalogue on Writing on Hands: Memory and Knowledge in Early Modern Europe.

It touches on how the hands were used as a mnemonic aid, for counting, for astronomical computing, for musical composition, and even as sundials.