"Okay, so like --" He shifts on his barstool, turning to face Cisco more directly, gesturing with both hands. "There's some worlds where magic works, right? And some where magic from other worlds is gonna act unpredictably, and some where it doesn't work at all. There's at least one world out there where you can travel faster than light by using warp engines, and another where you can only manage interstellar distances through wormholes, and one where you can make your own wormholes but they collapse as soon as you shut down the generator thing. There's like no consistency at all across the universes and it's amazing."

He's grinning, maybe just a little wildly.