What are some of the properties of the simulation we live in?

Recent events, namely Donald Trump narrowly avoiding being murdered, in astonishing fashion, is one element that leads me to believe we are in some sort of simulation.

I think there is a large amount of cause and effect in the simulation. The kind you would expect. But I also think some things are predetermined, or post-determined. The latter being Trump's survival this weekend potentially.

I'm curious if other forum members think this way. And how it may operate to them.

There are a lot of curious patterns of the universe for example. Can you name any?