"Well, would be decent if you could control it," Seth points out. He wouldn't mind that power at all, actually. To not be worried about being observed or detected by anyone he wouldn't want to be? That would be ideal, really. But extremely lonely if you couldn't actually turn it off.

When they get outside, Seth goes up to a random person. "Excuse me, could I--" He's flat-out ignored. Or rather, the person doesn't seem to intentionally avoid paying attention, they just don't notice. Seth tries again, with another person. With the third, he actually goes as far as to wave his hand obnoxiously in front of their eyes. They just blink a few times, as if to clear the vision, and keep on walking.

"Well..." Seth says, stuffing his hands into his pockets. "Guess that settles that." Is it weird he's kind of relieved?