Hi James Brown:
The Watchtower Society quoted the scientist R.H. Brown, who is/was an Adventist (may be he is dead) of the Adventist Andrews University , to defend the 6000 years of human creation. I was reading some articles published by R. H. Brown, and I found one in which he commented about the book entitled "THE AGE OF THE EARTH", whose author is G. Brent Dalrymple. Let us read what Brown said:
Dalrymple makes a good case for an age of about 4.5 billion years for the material of which the earth, moon, and meteorites are composed. He evidently believes that he has thoroughly discredited special creationism. His treatment in The Age of the Earth has made it much more difficult to plausibly explain radiometric data on the basis of a creation of the entire Solar System, or the physical matter in planet Earth, within the last few thousand years. In my opinion, the defense of such a position is a losing battle. (Origins 19(2):87-90 (1992).)
Note that Brown, an Adventist, had to admit that the defense of a 6 literal days of creation is "a losing battle". But, what was Brown's argument in favor to 6000 years of man existence?.....Brown said that the Flood changed the concentration of carbon-14 in carbon-12, because before the Flood there was much more carbon-12 on account of the great number of animals in the planet. Accordingly, Brown said that the carbon-14 technique could not give the right dates for fossils before the Flood. However, the global Flood did not happen, so Brown used a false assumption to discredit the radiocarbon dates.