No, clearly not. But I’ve already explained how they are substitutes and you just ignored my point.
Not that they need to be substitutes in the first place. Any mode of transportation is going to be more or less dangerous than any other mode of transportation, and that alone is enough to compare them. You don’t need to be able to literally substitute a plane for a motorcycle in every situation to analyze the differences in the danger between them.
No, clearly not. But I’ve already explained how they are substitutes and you just ignored my point.
Not that they need to be substitutes in the first place. Any mode of transportation is going to be more or less dangerous than any other mode of transportation, and that alone is enough to compare them. You don’t need to be able to literally substitute a plane for a motorcycle in every situation to analyze the differences in the danger between them.