> 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.
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.
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.