Honestly, Lea's never been a big fan of science, and Vexen sure didn't instill any confidence in him that it could be used for good instead of evil. He stopped asking questions about the nature of Nobodies and Heartless and Hammerspace Weaponry pretty quickly. When the stranger says his eyes were a mental thing, too, Lea looks a little puzzled, but isn't quite sure he wants to know what sort of mental thing just happened. Maybe he'll ask later.

He grins a bit at the question, though, and holds the chakram out, flat, his palm supporting the crossguard from beneath.

"Sure, you can touch it," he says. "You can't hold it, or it'll just disappear--apparently they're coded to only me or somesuch, I never really asked--but anybody can touch them so long as I'm holding them." He lifts his chin a little. "Just watch the edges, they're real sharp." A chuckle, and he shrugs one shoulder. "The benefits of summonable weaponry: they're always razor sharp when I call 'em, and I never have to sharpen 'em myself."