> In another 300-500 years

instead of "In the future", triggers me. Do you know something we do not? I am resigned to the notion that everything is up for grabs.

> I am not sure if I am a toy simulation

We need "reality discriminants". The trippy thing is if they could exist and their output is not necessarily boolean. There would be a threshold point at which beings can exist along the simulated-real spectrum, were by they can understand the output of the "reality discriminants", yet they are not real.