That's right Mcgraph, we have Gods promise there will never be another global flood. Rob also commented on the Kentucky ark , and you are right , it won't float , it was built as an exhibit attraction and visual reminder of the original. It is a mistake , IF you were inferring that this was beyond the skill , abilities and equipment of ancient man. There were many things constructed that we have no idea for sure how they did it and that includes giant seagoing vessels. More recently a floating full size ark, btw, was constructed in holland. Oh, and can you show me where it says only 8 people were involved in building Noah's ark ?            Senoufou , I,m not qualified to comment on speciation in much detail, except to say that it is known to happen faster than you suggest. You might like to google something like ...speedy species...for some examples .and i see no problem with mamoths and sabre tooth tigers being on board , and juvenile dinosaur for that matter.