Why does quantum computing threaten encryption if qubits fail so much?

[RadekVítek]

Quantum computers are supposed to break encryption but I read quantum computers have super high error rates. How can they factor large numbers if they can't even keep qubits stable?

[Vacant Niamh]

Good question. There's a real gap between where quantum is now and what's needed for cryptographically relevant problems. Current quantum computers are prototype stage with high error rates