From John Bell, Berkhamsted, Hertfordshire, UK
Bernd-Juergen Fischer rightly points out that a simulation of the universe would only need to take account of the inner world of the subjective “I” and whomever and whatever they interact with (Letters, 1 June).
Taking that concept further, most of the universe would need only be stored as a vague set of probabilities, which would only have to be set in stone as subjective reality when the “I” observes something. Wait a minute, that sounds familiar!
