What Quantum Computers Actually Do Better (And What They Don’t)
Four problem families where quantum computers have a real or plausible edge, ranked by the strength of the evidence, plus a screening test for…
Grover and the Honest Speedup
Grover gives a quadratic speedup, and almost nobody can use it. Why AES survives the quantum era, what the halving figure means, and what…
What Quantum Computing Actually Is
The 'tries every answer at once' story is wrong, and it leads to the wrong investments. A plain account of qubits, interference, and the…
Quantum Parallelism: What “All at Once” Leaves Out
Superposition holds many states. Parallelism applies one operation to all of them. Interference decides what survives measurement, and that last step is the whole…