I mean, why not know for certain? We are made up from electrical impulses between our synapses and literally cease to exist on power down.

Proving this of course goes into philosophy and belief which - as an Autist - eludes me in the reasoning.

However I might be one of the few who can be pretty certain about it, since I died once already (heart stopped) and the following year I had to build myself up again not only physically but also from the mind in an indescribable way.

So if that had progressed further I am very certain parts of what defines me as a person would’ve been lost.