Materials "from Roswell" crash - likely not alien

[Maxmars]

[Video: https://www.youtube.com/watch?v=J6xtxZwrGLY]

Thanks for that treatment on the subject. 

I know "someone" claimed that this was a piece from the alleged crashed vehicle... but why necessarily are we to assume it had anything to do with propulsion or gravity control?  I mean, why is it all or nothing, "It's either antigrav tech or it's bunk?"  This might not even be a piece of the original object, but something from within it, or something that struck it, no?  It seems entirely out of place to assume anything about this, other than that it's not mind-bending super-tech.