Comb spine and hollerith tabulator: what they have in common
- Step 1. Comb spine — is part of — Comb. The base that holds the teeth.
- Step 2. Comb — is made of — Bone. Ancient combs were carved from bone and antler.
- Step 3. Bone — is material for — Dice. Ancient dice were carved from animal bones.
- Step 4. Dice — evolved into — Probability theory. Problems about games of dice (Pascal, Fermat).
- Step 5. Probability theory — is used in — Statistics. Probabilistic foundations.
- Step 6. Statistics — uses — Hollerith tabulator. Processing censuses.