Not up for night studying, huh? [It's said lightly, almost gently, rather than chidingly. He shrugs to emphasize that it's no big deal, in case Sans hasn't gotten the it's fine takeaway yet.]

Seems like your department's bringing up good points, instead - I'm sure it'll save time, talking with experts. As fun as reinventing the wheel is... I can save it for after I know the wheel's a useful component.