It’s possible that consciousness is merely observation and agency, or less comfortably, just observation. A lot of one’s identity comes from their experiences,

It’s possible that consciousness is merely observation and agency, or less comfortably, just observation. A lot of one’s identity comes from their experiences, particularly as a child, and like you say: memory has been proven to be physically rooted in the brain. We could all be the same observer moving around in time and space, a new one every morning, or the same continuously, and there would be very little way to tell. Who can say whether the day to day fluctuations in our behaviour are biological or a result of a different will driving us?