• Quantum computers will not appear soon, despite optimistic forecasts.

• A quantum computer uses the strangeness of quantum states to perform calculations.

• Qubits are the basis of quantum computing, but they are fragile and easily destroyed.

• Decoherence is a major problem that hinders quantum computing.

• Noisy quantum methods (NISQ) - one of the ways to correct errors, but has not yet reached the desired level.

• Alternative methods include topological states, but their implementation remains undefined.

• The possibilities of quantum computing do exist, but their implementation can be difficult.

This is timely with Michio Kaku going on another media hype tour, and AI at peak hype.