A couple responses: Even with the hardware, google can't shrink the window past 7ms or so, based on published reports. To preserve consistency there are situa

A couple responses: Even with the hardware, google can't shrink the window past 7ms or so, based on published reports. To preserve consistency there are situations where you need to wait out the clock uncertainty. Spanner still uses paxos for replication because ordering is only part of the problem consensus solves.