Guides
Guides to timers and random picks
Plain-English guides to keeping time and picking fairly: how random pickers work, fair giveaways, dice odds, timer accuracy and planning with a clock.
- How random is a random number generator?Pseudo-random vs cryptographic randomness, modulo bias, and what TickPickr uses.
- How to run a fair giveaway or prize drawRules to publish, the legal basics in the US and UK, and a draw people can trust.
- Dice probability: the odds for 2d6, 3d6 and d20Exact odds for every total, why 7 comes up most, and what advantage is worth.
- How accurate are online timers and stopwatches?Browser clocks, background tabs, sleeping laptops and locked phones explained.
- Timeboxing vs time blocking: which works for you?Two ways to plan with a clock, how they differ, and how to size your boxes.
Looking for a tool instead? Start a timer or pick a random name.