One other essay that comes to mind is the 1945 piece by Vannevar Bush, "As We May Think", that lays out the vision for a "Memex", or memory extension device, in the direction of what PCs and smartphones eventually became.
I think it's nice to reflect on a time, not too long ago, where these devices were a mere figment of a scientist's imagination, only to materialize decades in the future. What can you dream up today?