[mrkeen]

> I'm not sure I understand Q1 - that's exactly the point: If you withdraw _from your account_ and customer B withdraws from _their_ account

Same account.

> the actor isn't clear here when you say "I re-read events 1-100" -- which actor is "I"?

The fundamental purpose of Paxos is that different actors will come to a consensus. If different actors see different facts, no consensus was reached, and Paxos wasn't necessary.

[dgacmu]

If it's the same account, the two operations will have the same dependencies, and thus the system will be forced to order them the same at all replicas.