How We KnowAnswer
Why Can We Read Mammoth DNA but Not Dinosaur DNA?
A frozen mammoth tooth can hold readable DNA. A dinosaur fossil can preserve the shape of a bone for far longer. Here’s why those are different feats.
THE QUESTION LIBRARY HOW WE KNOW
Can science answer every question?
Science can test explanations and inform decisions, but evidence alone cannot choose our values. Learn the difference between unknown and unknowable.
THE SHORT ANSWER
No. Science answers questions by comparing explanations with observations. It can inform choices about values and meaning, but measurements alone do not decide what we ought to value. Some scientific questions remain open because the evidence is incomplete. Saying we do not know yet is different from proving that nobody could ever know. A useful answer separates those kinds of limits.
- Separate empirical questions from value judgments.
- Unknown now does not mean unknowable forever.
- Uncertainty is part of an informative measurement.
WHAT WE DON’T KNOW YET
We cannot provide a complete forecast of everything humans might eventually discover. Dark matter constituents remain unconfirmed in the checked NASA explanation.
WHAT WOULD CHANGE THIS ANSWER
New observations, sharper definitions, or a test distinguishing previously indistinguishable explanations.
No. Science answers questions by comparing explanations with observations. It can inform choices about values and meaning, but measurements alone do not decide what we ought to value. Some scientific questions remain open because the evidence is incomplete. Saying we do not know yet is different from proving that nobody could ever know. A useful answer separates those kinds of limits.
THE LONG ANSWER
THE LONG ANSWER · ABOUT 2 MINUTES
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Keep asking
Why Can We Read Mammoth DNA but Not Dinosaur DNA?
Cold ground can slow DNA’s breakdown enough for short fragments to survive.
New here?
God Plays Dice answers big questions in plain words, with sources and one of six honest labels.
Words worth knowing (2)
- empirical
- Based on observation or measurement.
- uncertainty
- The reported limits on a measurement or conclusion.
Sources & further reading
(3) · Checked Oct 5, 2026
- Science has limits: A few things that science does not do ↗UC Museum of Paleontology, University of California BerkeleyMethodological limits and value judgments; no sweeping claim that every religious assertion is untestable.
- Dark Matter ↗NASA Science / Jet Propulsion LaboratoryOnly gravitational evidence and unconfirmed constituents used; no percentage or particle-candidate claims.
- NIST TN1297: Classification of Components of Uncertainty ↗National Institute of Standards and TechnologyMeasurement uncertainty, not a proof that all future knowledge has absolute bounds.
See a mistake? Report a problem. Corrections are made openly.
CONTINUE THE THREAD
Where this question leads.
How We KnowAnswer
Mutation by Natural Dominance: One Mutation or a Hundred?
If 100 bacteria carry the same DNA change, did it arise once or many times? The answer matters when testing Ricardo Maldonado’s hypothesis.
How We KnowAnswer
Are the colors in space photos real?
A space image can be faithful to measured light without matching human eyesight. Here is how to read the translation.