We know in Language we have an affinity for the word 'Same', I've noticed that when we used it with respect to objects and people, my question is whether this is a particular problem with definition in our language or a greater idea involving how we deal with change over time.
The best example I have of this is the pre-socratic phrase about not being able to enter 'the same river twice', in our natural language we would refer to any river with the same name as 'the same river' even though it's properties change we accept that something can be the same 'object' even though its properties can change, whereas this suggests that due to the change in the river (water flowing) and the changed in the individual entering the river, the same person cannot enter the same river twice, this time the river being the 'same' is about not changing instead of having some sense of identity that we provide.
People are the best example of this, we may say that we've had the 'same boss' for the last ten years, but at the same time someone who has experienced change due to age or personal development may say that they aren't 'the same' as they were, or may take this further and say they aren't 'the same person they were' and hence my boss for the last ten years cannot be 'the same boss' as they have changed in this context due to aging in this time.