Permutation City is a Greg Egan book about people creating copies of themselves to run in virtual worlds. The in real life part of it is partially set in Sydney right near where I live, which is kind of neat. Because it’s a Greg Egan book, there’s lot’s of talking about ideas of how we are what we think we are. This one’s got a little less oomph to it, but I expect that’s just because it’s from 1994.
One of the ideas he explores is about being able to edit your own personality completely as a digital entity. One of the (digital) characters has it set up so he pours himself drinks to change his mood. A whole liquor cabinet full of Optimism, Calm Acceptance, Driven to Succeed, which felt more natural to him than sitting at a mixing board style console to tweak his personality.
I love thinking about that whole digital consciousness stuff. Even if it’s infeasible in real life. In this book he talks about the different paths taken in virtual biology. Some people generate a bunch of ad-hoc processes to make you feel like you’re there, but another character is working in a virtual world with completely different laws of physics. She’s got a project trying to prove whether or not natural selection is possible in that universe with much less complex rules.
There’s lots of neat stuff here. Not my favourite Greg Egan, but still, damned good book.