@axx Unfortunately the scalability promises are still wild guesses as I understand it; going from 8 topological qubits to a million is probably far from a done deal (in more understandable areas, think of the scalability promises of Digital Alpha or Intel Pentium 4, and those were a lot further up the scaling chart). As a counterpoint, I found Peter Gutmann‘s https://www.cs.auckland.ac.nz/~pgut001/pubs/bollocks.pdf an interesting read (at least thought-provoking — I don‘t know whether it’s really accurate or fair either).