Nietzsche isn't simply saying that knowledge changes over time—he's suggesting something more unsettling: that what we call "facts" are themselves human constructions, born from our particular needs and perspectives rather than discovered like buried treasure. The radical part is that he refuses the comfort of believing some truths exist beyond our reaching, which forces us to take responsibility for what we claim to know. When a jury deliberates a criminal case, they're not uncovering an eternal fact of guilt or innocence; they're constructing a truth that will shape a life—and understanding this difference might make them approach their verdict with appropriate humility rather than absolute certainty.