>>When you look at a clock, do you change what time it is?
>>I get what you're saying, observation collpases the waveform.
>>But that doesn't make anything worthless. That seems to be an unnecessary claim.
>
>It changes it, but as you say, not enough to matter for the normal operation of a clock. For simulated human beings ... they would operate at the macro level as we do. While they're there, they are affecting everything around them appropriately at the quantum level ... but as for trees, and birds, and bridges, and toothpaste ... it would not be an interference beyond use.

Ok.

So backing up.

Let's say we've made a simulation universe.

In that simulation, let's do Young's Double Slit experiment.

Let's also put a simulated human being in there to watch the simulated experiment.

My question is, we assume the model itself is in agreement with real-world measurements before the simulated human being is put in there, but is that necessary?

My suggestion is that it is the simulated human being and its measurements that have to agree with our real-world measurements, not the underlying model.

In other words, the Double Slit experiment only applies to measurements, and in a simulation that includes a human being, that means only the information in the simulated brain has to demonstrate the uncertainty principle.