Well depends on in what field, bionics are pretty advanced, now it's basically just a metal arm like it was your normal arm, it's more precise (compared to this time) but you still can't feel with it though. guns have bigger calibers, are lighter, better scopes, also there are rail guns, you know the kind where it fires a projectile extremely fast thanks to magnetisicsm, and the time machines I think there were some super duper fucking secret project or sumthin, didn't hear about them until I was just about to go throughwhat technology is there in your time ?