Take all that together with the fact that Iota's consensus convergence depends either on all payees choosing to employ the same Monte Carlo judgement
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Take all that together with the fact that Bitcoin's consensus convergence depends either on all payees choosing to employ the same Longest Chain Wins judgement
The distinction is that that there is no way to verify from the block chain whether every payee did employ the Monte Carlo judgement. Thus there is no Nash equilibrium.