🎯 Not a Fair Coin

A real coin is fair: half heads, half tails. A qubit does not have to be. You can tilt it so it lands on 0 nine times out of ten — or almost never.

• •The tilt is part of the qubit, not part of how you throw it.
• •You set the tilt before you look. After you look it is too late — it has already picked.
• •A tilt of "all the way to 0" is just an ordinary bit again. Ordinary bits are qubits that gave up.
• •Here is the strange part: the tilt can be negative, and negative tilts can cancel each other out. Nothing in the ordinary world does that.