Thank you. What evidence do they present about earth's gravity being different in the past? Are they even aware of all the other consequences of that hypothesis?
The author argues that a sauropod with a weight of 70,000 lb (nearly 32 tonnes) would not be able to lift its body from the ground, i.e. to stand up from a recumbent position, nor would its heart be able to pump blood up its long neck to its brain.
He also argues that there were pterosaurs weighing up to 350 lb (160 kg) and birds of prey like the Argentinian teratorn, which weighed 170-200 lb (77-90 kg), whereas the largest living flying creatures weigh only about 30 lb (14 kg).
He also argues that tyrannosaurs weighed more than modern elephants, and that any fall would inflict fatal injuries; this appears to contradict the hypothesis that tyrannosaurs actively attacked living prey. Also mammoths were as large as elephants, but Pleistocene art shows them galloping. Finally, the
Utahraptor weighed 1500 lb (680 kg) and ran on the balls of its feet or on its toes.
Not being a biologist, I don't know what to make of Holden's supposed facts; I wouldn't put much trust in them.
His hypothesis is that before the flood the Earth orbited a small, cool stellar body or a binary star, whose gravitational attraction pulled the Earth into an egg shape. This system was eventually captured by the Sun, but the small star or stars have survived as Jupiter and Saturn. This hypothesis seems to me to be utterly crazy; it is totally inconsistent with everything we know about the solar system.