Wagering is old, but the particular forms it takes are not. The lottery as a revenue instrument, the bookmaker as a maker of prices, and the pool as a way of sharing a common fund are three separate inventions with separate logics. These entries trace where each came from and what problem it was solving.
| Entry type | Entry | Last updated | Sections | Figures |
|---|---|---|---|---|
| narrative entry | Lotteries, from public finance to state monopoly The lottery is the oldest surviving commercial form of chance, and for most of its history it was a financing instrument rather than an entertainment product. | 17 August 2026 | 4 | 0 |
| worked arithmetic | Bookmaking, odds notation and the overround A bookmaker does not know the probabilities and does not need to. The book is balanced by pricing every outcome slightly short, so the implied probabilities sum to more than one. | 17 August 2026 | 4 | 1 |
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