If their radio-carbon methods have now been shown to be 1,500 years off in their dating, then that would mean that the Shroud of Turin was not made in the 1500s, but in...hmmmm...let me see heree.....1500 - 1500 = "The time of Christ"
tada!
The 1500 years is cumulative, IOW, by the time one gets to 30,000 years, the error is 1500 -- or so they say. Basing it as they do on proxy sources; since those sources maintain the carbon more reliably, what can be said is, there's no way to calibrate older dates, because the material actually being dated (old campfire or what have you) won't contain or retain the carbon ratios in the same way. However, using this yardstick, the error in the Turin thingee would be in the area of 25 years.
Applying the new dates suggests that their period of co-existence with Neanderthals was much shorter than thought.IOW, the "research" shows that the new calibration, when applied only to stuff the "researcher" wants to consider the product of allegedly modern humans, shows that the stuff that wasn't recalibrated is suddenly contemporary. Gosh, what a surprise.