Quantum Computing, Fault Tolerance, Error Correction, Logical Qubits.
24, 28, 32. Full intermediate scale (ala NISQ with 50 to a few hundred logical qubits) will take another two to four years after smaller configurations are available. That’s really just a guess on my part. And if you really want to get to post-NISQ with more than a few hundred logical qubits, that