Public certainty and expert agreement are not the same thing.
Textbooks, press releases, and policy frameworks need clear accounts of reality. But clarity can compress an active dispute into a single official-looking answer. When fundamental physicists respond privately to detailed questions, sharp divisions appear around dark matter, quantum gravity, and the structure of the cosmos. On some questions, no proposed model commands a majority.
This does not mean science knows nothing, or that every explanation is equally credible. Agreement can be strong around observations while remaining weak around what causes them. The measurement may be reliable even when the larger model is unsettled.
That boundary matters. If uncertainty is hidden, contradictory evidence is easier to dismiss as noise and disagreement can look like incompetence. If uncertainty is marked, it becomes operational: researchers can compare models, design measurements, and discover what would change their minds.
The same discipline helps beyond physics. Ask what was directly observed, what was inferred, where agreement is broad, what remains unresolved, and what evidence could separate competing explanations. This is not permission to replace evidence with private belief. It is permission to see the map clearly enough to notice where it stops.
A trustworthy map includes its blank spaces.