🧵 The quantum industry spent years counting qubits. That metric has changed. Here's what replaced it and why it matters. 2025 was the year logical qubits bec

🧵 The quantum industry spent years counting qubits. That metric has changed. Here's what replaced it and why it matters. 2025 was the year logical qubits became the operative benchmark for hardware roadmaps. A system with millions of physical qubits but poor error correction is not inherently use…