[ Maruki's eyes brighten, then his whole expression. Even if Akira isn't familiar with him, it's undoubtedly an experience he's familiar with from someone in his life: An incurable nerd who has just found an opportunity to talk about their special interest. ]

You could even say there's a... psience to it.

[ ... ]

Ah, it sounds the same, so the joke doesn't– [ His hands unwind, gesticulate vaguely against the tabletop. ] Psience, p-s-i! You know, like cognitive psience...