Originally Posted by Anubis
That's a pretty big leap.
We don't know what's in the arc reactor. All we kinda know is that it's possibly based off of the energy he was able to take a look at from the cosmic cube.
How is that a big leap? The metal Tony created was designed to replace the Palladium core. The square cartridges being burnt up in IM2 were palladium cores. Palladium cores are metal based cores. Vibranium is the new metal designed to replace the palladium core.
We know the Palladium core is important just from scenes in IM & IM2.
Liek I said earlier, if you look at the ArcReactor as a whole, it's design is derived from the CosmicCube.
We're just talking about the metal core needed to "power" the reactor.