A No-Plane Axiom

Plane parts would not need to be planted at 9/11 crash sites if real planes were used in the attacks.

Corollary: evidence of planted parts is evidence that real planes were not used for the attacks.

Evidence of planted parts:

here,

here,

here.

These are just for starters. There is also the famous piece of "AA77" fuselage on the Pentagon lawn, the "AA77" nosecone that magically pentrated through multiple walls intact, and the various wheels and engines found around the WTC and Pentagon.