According to the uniformitarian model of earth history which is the only model taught in the public schools, the sedimentary layers on the continents become rock were deposited sequentially by the ocean having transgressed dozens of times onto the continents during hundreds of millions of years, yet what would have caused the ocean to transgress many times, and why do the uniformitarians have no explanation of it? The much more intellectually satisfying explanation is that there was one Flood (see Page titled Natural Selection by Noah’s Flood and the great website GlobalFlood.org), so why aren’t both theories taught in the public schools to hone the students’ critical thinking skills?