I was thinking particularly of those branches of science that would be completely unusable.
Anything to do with palaeontology, all of geology, dendrochronology, any archaeology and anthropology older than say 4,500 years.
Evolution of course but also the lumps of genetics dealing with mutation, variation (eg bottlenecks) and molecular clocks. Population dynamics.
Presumably all of astronomy and cosmology would have to go - except those bits dealing with what we can see today - which takes out most of big physics.
The physics side is interesting because presumably it would have knock on effects into technologies. It would be interesting to think of technologies that couldn't work if the earth was only 6,000 old.
Edited by Tangle, : No reason given.
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