# Posts
Recent Posts
- Which Boggle Words Are Actually Worth Memorizing?4/17/2026
Sampling Boggle boards and TF-IDF rescoring to find words that appear often but opponents won't know.
- You've Seen 100 Species. How Many Exist?4/6/2026
Estimating what you haven't seen from what you have, using the frequency of frequencies.
- Why Regions, Not Points4/2/2026
Concepts as hyperrectangles: containment encodes subsumption, but gradients die without Gumbel smoothing.
- Is 561 Prime?12/16/2024
Each fix for a primality test's blind spot reveals the next one, from Fermat's pseudoprimes to BPSW's unclaimed bounty.
- What Differences Reveal12/9/2024
Subtracting consecutive terms is an exact discrete calculus with its own chain rule, Taylor series, and fixed points.
- Channel Hopping as a Bandit Problem6/25/2023
WiFi channel hopping as a multi-armed bandit, with regret bounds for Poisson rewards.