[jchw]

Somewhat relatedly, I've always appreciated Go adding some runtime checks to detect race conditions, like concurrent map writes. It's not as good as having safe concurrency from the ground up, but on the other hand it's a lot better than not having detection, as everyone makes mistakes from time to time, and imperfect as it may be, the detection usually does catch it quickly. Especially nice since it is on in your production builds; a big obstacle with a lot of debugging tools is they're hard to get them where you need them...