I A measured spin is still a Qbit

Gary Venter
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A Qbit with up probability 1 - (10^-75) would most likely still produce a reading of up, and an up reading does not mean that the up probability is 1.0 to billions of decimal places.
A Qbit with up probability 1 - (10^-75) would most likely still produce a reading of up, so an up reading does not mean that the up probability is 1.0 to millions of decimal places.

The spin detector is a physical device made of atoms. None of its surfaces are pure mathematical planes or lines. Just because it has oriented a particle in the x-direction in a way to produce a reading of up does not mean that it is oriented exactly in that direction with zero uncertainty or has stopped having Qbit spin.
 
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Those are words. What they mean put together like this I cannot fathom.
 
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As Monty Python said "It's not just the total number of words. Getting them in the right order is almost as important."
 
Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. Towards the end of the first lecture for the Qiskit Global Summer School 2025, Foundations of Quantum Mechanics, Olivia Lanes (Global Lead, Content and Education IBM) stated... Source: https://www.physicsforums.com/insights/quantum-entanglement-is-a-kinematic-fact-not-a-dynamical-effect/ by @RUTA
If we release an electron around a positively charged sphere, the initial state of electron is a linear combination of Hydrogen-like states. According to quantum mechanics, evolution of time would not change this initial state because the potential is time independent. However, classically we expect the electron to collide with the sphere. So, it seems that the quantum and classics predict different behaviours!

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