Note: I’m not working on this page anymore, but I’m keeping it alive, because I’ve listened to Bret Victor. You’re welcome to write me an email at any time, or comment on the posts and pages here. Don’t hesitate.
If you wrote a comment in the past and it didn’t show up – I’m sorry, I’ve deleted it. Until recently (2020-03-28), this page was on self-hosted WordPress.org and I was too dumb to turn on the spam filter. If there were sensible comments in the moderation queue, they were drowned out by an inordinate volume of spam. If you write a comment now, I will most likely see it and approve it. Fire away.