🚀 go-pugleaf

In article <1992Apr8.161532.24698@cs.yale.edu>, rescorla@rtnmr.chem.yale.edu (Eric Rescorla) writes:
|> In article <9204080901.aa00587@Paris.ics.uci.edu> kibler@turing.ICS.UCI.EDU (Dennis Kibler) writes:
|> > Let me put it in a more concrete form. Suppose we use carbon
|> >dating to measure the age of a fossilized plant. I don't
|> >understand why we aren't measuring the age of the carbon,
|> >created I presume at the some time before the age of the earth,
|> >rather than the age of the plant.
|> The percentage of C14 in the atmosphere is ~constant over time.
|> As long as you're alive, you exchange carbon with the atmosphere
|> and maintain the atmospheric concentration of C14 in your system.
|> When you die, you stop exchanging and that's the zero-time.

The concentrations have not been ~ constant over time.

See some of Colin Renfrew's work...  You'd find it interesting...


Dan