Well, we don’t yet have Star Trek’s food replicator, but many of the things our science fiction writers talked about decades ago are coming true today.

2001: A Space Odyssey has many relics of the 60s, but the overarching point: What do you trust when two infallible, superhuman AIs disagree with each other? When one of two AIs, each incapable of making a mistake, makes a mistake?

That question is as relevant today as it was half a century ago.

Carl Sagan’s 1990 keynote is no less true now than when he gave it.

Sure, some of our predictions haven’t come true, like pretty much anything from the Jetsons.

But what’s amazing is how much has.

It’s a testament to how far in advance humans can see things.

What do you know for sure is going to happen in the next 20 years? Can you work on that today?