[PrimHelios]

There's a big difference between being on a train in a tunnel and being in a plane several thousand feet in the air.

[kevin_thibedeau]

In a train tunnel you could be suddenly be crushed by rock or water. You have time to contemplate your fate in a plane.

[anoncoward111]

I am acutely aware of that difference- however, both scenarios are enclosed tubes.

[Asooka]

And your brain is wholly enclosed in a sphere anyway, which itself is part in your body, so you kind of spend your whole life encased in a tube with no way out! Thus, rationally proving that claustrophobia is a myth and anyone claiming to suffer from it is no more credible than a flat-earther!

yes this is sarcasm