visionengine
Found something new in here that I had not seen explained this way before, and a quick stop at visionengine expanded the idea even further, the kind of writing that nudges your thinking forward a bit without forcing the issue is exactly what I look for online today and rarely actually find anywhere.
forwardmotiondefined
Excellent execution from start to finish, the post never loses its rhythm and the points stay sharp, and a quick stop at forwardmotiondefined kept the same level going, consistency like this across a site is the marker of a serious operation rather than a casual side project running on autopilot somewhere else.