bi-wire vs jumpers

Forget the jumpers. If your spkr has 4 posts & U don't want to bi-wire, just strip another inch off of the spkr wire and run the whole thing through Both terminals.

What is shotgun?

Generally, shotgun refers to a scenerio where two runs of cables are used when one run will do the trick. I'm curious to how it came up on a bi-wire thread too. I guess they are implying that instead of using two runs of cable per speaker one should be using four runs of cables per speaker. Or maybe Jgwilson is simply describing external bi-wiring, as opposed to internal bi-wiring, who knows.

Maybe Jgwilson will be kind enough to come back and enlighten us.

How does stripping an extra inch off the cable and running the same wire to both terminals differ from a jumper?

Henrly - functionally, it doesn't. I thought that was the point of Roscoe's post. Or at least, that's how I read it.