it makes sense as a distinction and I'll likely use it going forwards. The only thing I objected to was the idea that this distinction is something I should already know as a programmer. I guess it comes down to a case of separate bubbles/backgrounds, as I've never heard the distinction before in my time in industry and I'd guess it's considered standard jargon within your environment?

I would assume most HN folks have heard of Rich Hickey and his talks. Surely not all of them have. Learning never ends :-)

I knew about him, but haven't seen / heard of his talks.