a_haworthroberts wrote:On reflection, maybe this is 'free for all'.
Either way, thanks for the tip - I completely missed noticing the programme.
ETA: anyway, the article is just waffle. Kelvin made an honest attempt to estimate the age of the earth, on a scientific basis not by reading the biblical tealeaves. He just happened to miss a major contribution that wasn't known about at the time and his calculations were later corrected by others. Happens all the time in science.