In Tad Williams' novel, The Dragonbone Chair, the saying "When it falls on your head, then you are knowing it is a rock" conveys the idea that true understanding often comes from direct experience. It implies that some lessons can only be learned through personal encounters with reality, highlighting the difference between theoretical knowledge and experiential wisdom.

This quote suggests that many truths may seem abstract until one faces them head-on. The metaphor of a rock emphasizes the weight of sudden realizations, serving as a reminder that sometimes, life’s harsh lessons provide the clearest insights into our circumstances and choices.