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Type your question if you like (it's only shown back to you). Press Ask. Tick “Allow maybe” for a three-way answer. The board flips to YES, NO or MAYBE, each with an equal chance.
Every result comes from crypto.getRandomValues, your browser's cryptographic random generator, with rejection sampling so that every slice, face and number has exactly the chance it shows. The winner is decided before the animation starts; the spin only reveals it.
Yes: without “maybe”, yes and no each have exactly one chance in two. With “maybe”, each of the three answers has one chance in three.
For small things, sure. A trick that often helps: notice whether you feel relieved or disappointed by the answer. That feeling is your real choice.