For comparison, here’s what I come up with when I introspect about my intuition:
The planes I’m on usually have higher people density than the trains I ride.
People seem more likely to step in if a fight breaks out on a plane than on a train. (Although I wonder why I believe that, since I’ve never witnessed a fight on a plane. Maybe I’m influenced by point 1. I guess fliers are also quite proactive nowadays about piling on people who get violent on planes.)
Passengers on planes are screened for weapons before they board, and when they’re on-board there’s less room for them to take a swing at me than on a train.
Someone who confronts me on a plane is less likely/able to follow me home, or to somewhere isolated, than someone who confronts me on a train.
For comparison, here’s what I come up with when I introspect about my intuition:
The planes I’m on usually have higher people density than the trains I ride.
People seem more likely to step in if a fight breaks out on a plane than on a train. (Although I wonder why I believe that, since I’ve never witnessed a fight on a plane. Maybe I’m influenced by point 1. I guess fliers are also quite proactive nowadays about piling on people who get violent on planes.)
Passengers on planes are screened for weapons before they board, and when they’re on-board there’s less room for them to take a swing at me than on a train.
Someone who confronts me on a plane is less likely/able to follow me home, or to somewhere isolated, than someone who confronts me on a train.