This question has come up before in the context of governing bodies before (e.g. legislature vs executive). The usual answer is that we do our best to create ch

This question has come up before in the context of governing bodies before (e.g. legislature vs executive). The usual answer is that we do our best to create checks and balances, because there is no good answer to your question. Note: I am not saying that the existing system of checks and balances are actually doing any checking or balancing in any country presently. I am just suggesting that it is usually what we can aspire to.