[ WELL....shoot, that puts a rather large hole in their theory. Nenonen pauses to think it over; their brow furrows just slightly. ]

Well how was I supposed to know that? My world didn't have all these weird rules about magic.

[ In a Logical world, once a route is discovered, that route generally remains open--at least, as far as Nen is concerned. If you from from point A to point B, you should be able to do it again and again and again. ]

The way back's all closed up for good now and no one and nothing else is ever coming through again?