Reasons for believing in the permanence of the soul? What a fascinating thread - thoroughly enjoyed reading it!
I am still very much at the beginning of my critical/philosophical thinking journey, so what I say here might seem really basic and unsubstantiated, but I am trying to engage more with people with such wonderful minds as those on this forum.
I found the hammer analogy very interesting. To my mind, changing a single atom changes the hammer to something different. The general perception of the hammer has remained the same - we look at it as a constituent of its parts - carbon, hydrogen, iron etc atoms stacked and bonded in a specific way giving it what the majority of people would perceive to resemble what we have come to call a 'hammer.' I feel that it is still a hammer with that one atom change, but not the same hammer. Our minds don't register this changed atom - we don't suddenly lose our hammer because one atom changed, then think we have a new hammer.
I find the perception part quite interesting. To my mind (in its relatively novice-like manner), we cannot perceive anything as existing. The electron cloud around every atom changes constantly, there is no way to determine an absolutely static template of the hammer because time is infinitely reducible, and the most infinitesimal portion of time will have changed the hammer. Our minds cannot process those changes to that degree, so we have a generalised idea of what a hammer is, how it looks to our eyes through the reflection of light, and we assign 'hammer' to it. But there can be no 'hammer' outside of this perception and....oh dear, now my brain is wondering whether our perception of the hammer actually does make the hammer exist.
Is this what Buddhism is talking about - that nothing exists and there is only emptiness, and realisation of emptiness brings enlightenment?
What are y'all doing to my tiny little pea brain!