>>13458578>DNA typically has a half life generally understood as 521 years. On it's face that would indicate 1/450,000th the dna would still exist. You just use more samples, bigger samples and pcr them you can start getting dna.Your math is waaaay wrong, not even close to passing a sanity check.
The half life is 521, meaning every ~500 years you reduce the original DNA amount by half. 70 million divided by 500 is 140,000 half life cycles. Thus the original DNA left over in perfect conditions would be 1 in 0.5^140k ... You are off by thousands of orders of magnitude.
Nobody in any community, bio, paleo, physics etc, believes they actually found 70 million year old dinosaur dna.
It is factually not possible by current understanding.
The unspoken explanation is that the chinks who did the research fucked it up in some unknown way, but if I remember correctly they specifically compensated for a formerly identified contamination effect that happens when testing fossil DNA and they also confirmed their results with two different types of tests that otherwise never have reliability problems in detecting true DNA and are never questioned. So nobody is having any luck saying they made a mistake so far, their results look pretty sound.
That, or there is some paradigm-shifting aspect that is being ignored or not yet known. Quantum physics doesn't behave the way we think? Aliens? The fossils are not that old? We'll wait and see.
