I think that in the real world, most superficially reasonable actions do not have irreversible consequences that are very important. So, this assumption can hold within some approximation, and this should lead to a performance guarantee that is optimal within the accuracy of this approximation.
I think that in the real world, most superficially reasonable actions do not have irreversible consequences that are very important. So, this assumption can hold within some approximation, and this should lead to a performance guarantee that is optimal within the accuracy of this approximation.