[TXnMA]

Do you have the stupid belief that contrails are opaque? Ever see evena big dense cloud with "silver lining" around its edge?

Got physics?

The incoming vs outgoing question was answered exhaustively -- with illustrations of the perspective effects. The only outgoing trail that can possibly mimic an incoming one is one that is in direct line with the viewer (aligned to pass directly overhead). Noice that the outgoing trails DO NOT match reality. The incoming trails do.

Physics and perspective: get some -- it's good for you...

[TigersEye]

Do you have the stupid belief that contrails are opaque?

You are pretty much incapable of responding like a decent human being aren't you?

[Yardstick]

Ever see a big dense cloud with "silver lining" around its edge?

From post #60.