For teams
Decision audits
We instrument your hardest calls — pricing, hiring, forecasting — and replay them as decision trees with calibrated probabilities attached.
- Brier score baselining
- Calibration curves per analyst
- Quarterly re-forecasts
ability + probability
Probability is a surface you can learn to read.
bability.pro turns chance, distributions, and odds into tactile objects you can roll, weigh, and trust. No jargon. Just craft.
- 01 Learn
- 02 Simulate
- 03 Apply
Current face 3
§ 01
What probability is.
What probability is.
And what it isn't.
Expected
A coin remembers nothing.
Each toss is independent. The mathematics is calm, symmetric, and refuses to hold a grudge against the previous outcome. This is the prior.
- P(heads)
- 0.500
- P(tails)
- 0.500
- Variance
- 0.250
Observed
Ten heads in a row.
Reality runs the experiment exactly once. Streaks happen. The posterior updates — not because the coin changed, but because we did.
- Run length
- 10
- P(streak)
- 1/1024
- Surprise
- 10.0 bits
Drag the divider to re-weight the panels — a literal embodiment of probability.
§ 02
Simulate.
Simulate.
A coin you can weight.
0.000.250.500.751.00
H
T
Heads
0
Tails
0
Total flips
0
§ 03
Apply.
Apply.
Two ways in.
For learners
Primer playlists
Bayes, distributions, odds ratios — each one a twenty-minute interactive page where the math is a draggable object, not a wall of LaTeX.
- 12 primers, weekly cadence
- Inline simulators & quizzes
- Open transcripts
Probability used to feel like a hostile language. After two weeks with bability.pro the team was arguing about posteriors at lunch.
Odds are good.
Read probability like a native.
One email a week. A primer, a simulator, and one real decision dissected. Unsubscribe in one click — we keep the math, you keep your inbox.