Any general-purpose computer can simulate any other other computer (albeit slowly) and can therefore run all the programs that have ever been written, or, as far as we know, will ever be written. Computers are mind-blowingly cool tools. They are the most universal machines we have ever created.

Computers can be used to create things, connect people, assist the disadvantaged, and inspire the young. We only barely know how to program these things effectively and yet look at all we’ve done with them. I’m convinced our best work has yet to come.

To me, a programmable computer is a toy that never, ever stops being interesting.