The "everyone carries a smartphone that can talk to various information sources" part was an easy extrapolation of things that already existed in 1994: Motorola Envoy, a ~tablet (well, PDA using parlance from those times) with a wireless modem, was released in 1994. General Magic, a company that aimed to build such a device, was created in 1990.

I grant you that the existence of such easy to query information sources was probably less predictable.