Yes, I remember it from then too! Oddly I also recall that part of the result was that 3 dimensions is a kind of sweet spot for cords to be prone to tangling —

Yes, I remember it from then too! Oddly I also recall that part of the result was that 3 dimensions is a kind of sweet spot for cords to be prone to tangling — in 2 dimensions they can’t and in 4+ the state space too large for it to happen without really trying at it. But I don’t see that part of it in the link.