Demonstrated retention

A scrappy metric for the Mnemonic medium: what’s the longest interval over which the reader has successfully recalled a given item?

• Demonstrated retention reliably bounds future recall attempts on Quantum Country
• After five repetitions, most Quantum Country readers reach at least 1 month of demonstrated retention for at least 95% of questions
• Plots of demonstrated retention exaggerate exponential benefit of practice

e.g. here’s a plot of demonstrated retention for a single card:

See chunk 20220215082229 in qc-analysis.rmd. Asterisks represents 10th and 90th %iles.