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A comment on How you could have come up with Paxos yourself. Parent comment
In paxos's case the logic is very, very simple - it's just the reasons for the logic are difficult to sort out. So teaching it iteratively works very well, because you show how simpler versions fail.
This is, in general, a very good approach for teaching (although time consuming).
In paxos's case the logic is very, very simple - it's just the reasons for the logic are difficult to sort out. So teaching it iteratively works very well, because you show how simpler versions fail.