Thirty years ago, I remember doing some quick math as I watched the news magazine show 20/20 with Hugh Downs and Barbara Walters: In the year 2020, I’d be the unimaginable age of 48.

But that was all I knew. The future stretched out into murky waters. I had no idea what I wanted to be when I grew up or where I’d eventually land. I figured we’d have flying cars — obviously! — and home computers, although I lacked imagination to think up something like a pocket device that I could use to post pictures of our cats on the internet and sometimes make a call.