About problems that become easy to solve with the Wolfram Language: yes, lots and lots and lots. People mostly just go and use Mathematica—or now the Wolfram Language—to solve problems, and I don’t hear about what they do. But it’s amazing how often I’ll be at some science or technology event and some prominent person will say “oh, yes, I invented or discovered some big thing using the Wolfram Language”… It’s really encouraging to me to hear these things—even if it’s sometimes a decade or more after it happened.

In terms of favorite uses: well, I originally started building what’s now the Wolfram Language so I could use it myself. And I’m really excited about the things I discovered with it in exploring the computational universe of simple programs—the stuff I talked about it in my book A New Kind of Science. Really everything there was made possible by what’s now the Wolfram Language.