Carbon-14 dating is only one of a half-dozen or so radioisotopes they routinely use for dating. Different isotopes have different usable ranges. For example, the commonly used Potassium-40 dating is good from about 100,000 years to at least 4 billion years, though having a lower resolution than Carbon dating (which can be very precise). Obviously they would use something other than Carbon-14 to measure age, most likely Potassium-40.
Hey, my Fluke multimeter has a margin of error of +/- 1.5% How accurate is your meter? +/- 100,000,000 years?
Yeah, well,SO?
Don't try to bring science into this thread!