>>55616142My autistic headcanon is that flying is the type that's closest to normal. All the normal flying lines are, at least in the first gens, literally birds. The birds that specialised in something and evolved became those
>>55618531Thus flying could be the evolution of normal types but retained it.
One could argue that elemental types could be generated from normal mons adapting to different environments, but it could be that normal is incompatible with "magic" and elements, thus the lack of any mixture of normal + any other type (bar flying)
Fighting is the only type that could be also associated with normal and flying due to the purely physical nature of it, and to think of it they have almost a triangular matchup. However fighting types might've shedded their normal type because the two are not compatible with each other. Like a hardened normal type becomes fighting, while a winged normal type gains flying. It's like obtaining a new metallic object by melting vs welding.
Or it could simply be one of the countless gen1 bugs kek
