We'll Greg, the point of the song is that dating methods are not verifiable, though I would not go so far as to call them b...........!    Of course they might be accurate if they corresponded with recorded history!                      Yes, ed , it is wordy, but hopefully the general point is made, that whereas people may have the idea that there is a high degree of agreement between methods, and scientists all accept the same dates, that in fact there are widely different opinions.   I could have said as much with a shorter song.......but it would have less info to be verified!