There are finite number of possible humans due to there being a finite number of states a brain can be in.
There is an argument for moral realism that takes advantage of finiteness and computability of mental processes to show that there could be an objective morality
The universe might be discrete.
If mental states are finite, then the space of all possible human minds is finite and includes the one that believes they have knowledge of the computation’s result. It is possible for mental states of 2 minds to be different but extensionally behave like the same person. We would exclude human minds whose models don’t map well onto the physics of our universe though. You might not be willing to pick the opposite if we are talking about morality also @askbeehaw