Agreed on your last point. It's fairly obvious I think that we won't factor 1024 bit numbers by any direct evolution of the techniques used in smaller circuits.

Agreed on your last point. It's fairly obvious I think that we won't factor 1024 bit numbers by any direct evolution of the techniques used in smaller circuits. The hope is that you reach a threshold (error correction) where a completely different regime is unlocked by allowing you to implement a fundamentally different technology.