There is no line.
Originally Posted by appalachian angler
As a 9 or 10 year old kid I started tying bucktail jigs. That led into dressing hooks for spinners which I also made. THAT led into tying flies. One of the very popular local trout spinner styles had various flies with a small treble hook trailer, like the commercial "Joe's Flies" spinners. I made and sold some of those. As soon as I started tying, I picked up my Dad's old fly rod and started fly fishing. All flies are lures. Many "lures" as we commonly define them (cast by the weight of the lure itself, not the weight of the line) have elements of fly tying in them especially if you make them yourself. In fact that distinction is far from perfect as well, because for decades small plugs and spinners were very commonly fished on fly tackle.
If you take a hunk of wood, carve it, paint it, and hang some hooks on it, it is pretty obvious you are not fly tying, but you are still taking separate materials and fashioning them into something with which to catch a fish.
To the simpleton, proof does not matter once emotion takes hold of an issue.