I think it's useful to think about this issue from an Effective Field Theory perspective. This implies that there are hierarchical descriptions about the world

I think it's useful to think about this issue from an Effective Field Theory perspective. This implies that there are hierarchical descriptions about the world and higher level descriptions may not apply to lower level phenomena (though they are derived from lower level). E.g. a roomful of air has temperature and pressure but a single air molecule has none of those properties. Here. temperature and pressure are higher level properties which arise from a large number of molecules. Similarly, the concept of personal identity is very useful in everyday circumstances, but it breaks down when we consider amoeba/teletransporter like thought experiments.