I love this book! The part about the implication of digitized minds and long distance space travel was really eye-opening. It really makes you understand that, no, aliens are not visiting earth.
The entire thing is an amazing exploration of how the concept of time becomes a bit meaningless though with those capabilities: traveling at relativistic velocities for hundreds of years? Several of your backups live out whole lives and also a centuries old lawsuit is still in progress and a lawyer is slowly uploading on your laser propulsion source to talk about it. When you get back everyone will still be around because it's also surprisingly hard to actually die anymore.
The entire thing is an amazing exploration of how the concept of time becomes a bit meaningless though with those capabilities: traveling at relativistic velocities for hundreds of years? Several of your backups live out whole lives and also a centuries old lawsuit is still in progress and a lawyer is slowly uploading on your laser propulsion source to talk about it. When you get back everyone will still be around because it's also surprisingly hard to actually die anymore.