From the paper: > Goal 3: Create distance-5 surface codes on NISQ circuits that require a little over 100 qubits. > The argument presented in the next section

From the paper: > Goal 3: Create distance-5 surface codes on NISQ circuits that require a little over 100 qubits. > The argument presented in the next section asserts that attempts to reach Goals 1-3 will fail. Goal 3 is exactly what Google has recently achieved with Willow. Actually, they did even better, reaching a distance-7 surface code (with a little over 100 qubits). Q.E.D. To be clear, I do think your article is interesting and was valid at the time, but it goes to show how fast the field is advancing.