I'm posing it as more of a philosophical question.
Assume our Universe is a simulated one.
What features would I put in a Universe simulation (e.g. to reduce computational requirements) and how could we people living in the simulation detect these computational artifacts?
To keep this from being a duplicate of other similar questions I wanted to drill down and see if I could get some specific questions answered.
Assume we find discrepancies between observed and calculated values for things like the Pioneer anomaly (I am aware that current thinking attributes this to thermal effects of the RTG but thought something like this would be a great example).
If we made the discrepancy (between calculated and observed behavior) disappear by increasing our variable precision to some level but increasing our precision beyond that level reintroduces a discrepancy, would we consider this evidence that we're in simulated reality or am I barking up the wrong tree?
If this would not indicate we live in a simulation (even weakly), then what other evidence might we find that we could use to figure this out?