When you think about it.... If you start with the 20K - 40K radiocarbon dates they're now getting for dinosaur remains and assume 40,000 years to be something like the beginning of dinosaurs on Earth and also assume that the establishment scientists at least got the ratios right, you can plug the 40K number back into the standard little 24-hour clock analogy which has dinosaurs appearing around 10:40 PM, and you get an estimate of age for the Earth of around 720,000 years, which seems intuitively believable enough.