One Piece Episode 402

[Assertn]

Voodoo is based on the supernatural, which is, essentially, natural. Same thing with ghosts and reincarnation. And "room" just rearranges things around in 3d space...like quantum mechanics. Concepts, myths and ideas don't really bother me as fruit abilities... just things that are characteristically artificial.

Also, the Noro Noro beam is far from a counter-example, as it was even explained in its first reveal by Silver Fox as a technique which utilizes particles that scientists haven't even discovered yet.

I think the best counter-argument would be that guy on Jaya who had the spring fruit. In which case, I would have to point to the elastic properties of springs that the fruit is based on, rather than actual springs themselves.

[Xyrox]

And where exactly do you find doors in nature? =P