There are ways in which you can make that distinction objective to a certain degree. For example, by looking at responses that could be generated in the brain to exactly the same stimulus and there could be differences there.

But whether we want to do it because we want to have people to have a different idea of who we are or not, we do it naturally. So the way we construct our narrative is different from the way we constructed it a year ago. The difference is maybe very small or it may be huge.

If something produces an undue amount of pleasure or undue amount of displeasure, it's going to be judged differently and it's going to be introduced in your narrative with a different size, with a different development. So that is the next element to superimpose on the sequencing element. And in fact, that element is so powerful that very often it can trump the sequencing event, that the sequencing aspect.

What happens [in a coma] is that you lose the grounding of the self, you no longer have access to any feeling of your own existence.

The problem that we, as living organisms, face - and not we only, humans, but any living organism faces - is the management of life.

Narratives are not fixed. We change our narratives for ourselves and we change them not necessarily deliberately. In other words, some people do, some people will constantly reconstruct their biography for external purposes, it's a very interesting political ploy.

You're not the same after, say, an incredible love affair that went very well or a love affair that went bad. Or something that happens to your health, or something that happened to somebody else's health, that is close to you. Or something that happens professionally.