Just wanted to note that, if I'm not mistaken, your reference to "accidental complexity" should be "incidental complexity". Nice post. A Rich Hickey groupie here as well - like you I love his talks for their mind widening value.
That's something I wasn't 100% sure about. When "incidental complexity" was discussed in the talk, I thought it was pretty much the same as "accidental complexity" in the way that Fred Brooks means it in No Silver Bullet. So I used "accidental complexity" and linked to the wikipedia article to hopefully provide some useful info.
There is also Out of the Tarpit[1], which also uses "accidental." This is a paper Rich Hickey mentions in at least one of his talks.