Similarities in the DNA code simply prove the same designer wrote the code. This is not evidence for evolution, it is actually proof for creation! - Kent Hovind

If we assume the pre-Flood world had ideal living conditions, their memory, wisdom, and accumulated knowledge would have been incredible! How much could you learn in 900 years?! Add to that the fact that you can go talk with your great-great-great-great-great-great-grandfather, who is still living. You can learn from them and build on that knowledge. Plus, don’t forget that Methuselah could have known Adam for 243 years and learned from him; and Adam walked and talked with God Himself for maybe 100 years! I suspect the pre-Flood knowledge and maybe even technology and inventions would blow our minds today!

What would happen to a reptile if you put him in the Garden of Eden and let him live to be 900 years old? You'd have a big lizard - a really big lizard! Dinosaurs were big lizards that lived with Adam and Eve before the Flood came. You can get these Jackson chameleons right now at the pet store. What's he going to look like at about 15 tons? Probably some kind of triceratops.

We need to understand a couple of things. The original creation was very different. The Bible says that there was not only the earth but that there was water inside the crust of the earth. It was under the top crust of the earth actually. Psalm 24 says, "The earth is the Lord's, he hath founded it upon the seas." That's an interesting verse. The earth was built on top of the water. [...] And then the "fountains of the deep" broke open. The water which used to be in the crust went shooting to the surface when the fountains of the deep broke open. [...] And God is telling us here in the book of Job, God is talking here in chapter 38, that when the water issued out of the earth, it just burst out of the earth. It goes on and says, "And brake up for it my decreed place, and put bars and doors, and said,... Hitherto shalt thou come but no further: and here shall thy proud waves be stayed." I believe the earth broke up at the time of the Flood and we still have the scars all over the planet where this happened. They are called fault lines.