Haha yes I realised this too but I thought I would just leave it in for fun anyway.
If I may give some unsolicited advice, maybe you could limit the amount of eggs in the incubator, then have a separate egg storage for the rest. That way people can't just put eggs in the incubator without thinking and they'll have to use the scale. Also for the eggs with chicks inside them, maybe they could start shaking only when they're almost about to hatch? Not too early :)