Down through history, learned Bible scholors and wise teachers taught the doctrine of an Old Earth. There has been an attempt by Young Earth organizations like Answers In Genesis to convince their followers that the Old Earth Doctrine is new. Nothing could be further from the truth. Ken Ham is deceitful in his attempt to convince his followers that the Old Earth doctrine was invented so "compromised Christians" could fit "thousands of years into the Bible" after Charles Darwin came up with the theory of evolution.
There is one major problem with this information being spread by the Young Earth teachers. Thomas Chalmers, an Old Earth believer, published his opinion regarding the Gap Doctrine in 1833 in the series, Bridgewater Treatise. Charles Darwin did not publish his theory of evolution, The Origin Of The Species, until 1859, 26 years later. This is another example of how Answers In Genesis alters facts in order to promote their Young Earth theory.