If you have an illness and lose a good chunk of your microbiome did you just die? No. You're still you, just a version of you slightly further along the timelin

If you have an illness and lose a good chunk of your microbiome did you just die? No. You're still you, just a version of you slightly further along the timeline after some event that modified 'you'. Any copy of you that fails to simulate the mites on your left pinkie toenail is also 'you', just a version slightly further along the timeline after some event that modified 'you'. There is no 'you' - just an unbroken chain of chemical interactions stretching back to the first self-replicating molecule. 'You' is a concept that the pattern replicating event predictor engine that evolved to live in your skull is desperately clinging to. It has no real physical basis.