Others say we underestimated the importance of a small quantity of eggs and proposed a modified theory that doesn't need dark breakfast.

Can be confirmed by the fact anytime I eat a diner breakfast I feel more full than can be justified by the weight of the food alone.

By mass, sure - but have you considered delectability?

On the darkest day of the year, the dark breakfast can be balanced on its edge.

There's a lot more dark breakfast in the winter time.