Why is an actor ‘in’ a movie but ‘on’ a show?

Question

Why is an actor ‘in’ a movie but ‘on’ a show?

In: 39

Answer 1

Prepositions have almost no logic to them. You sit at a table, in a chair, on a couch, in a house, at home, in the street, on the sidewalk, in a car, on a boat… none of it really makes sense, but if someone gets it wrong, it’s obvious.