In many cases, pornography has been attributed to becoming something of a stepping stone. Some have began by looking at the lingerie section of mail order catalogs, then progressed to images of full nudity, then to sex acts, and so on. Eventually, what may have begun as simple curiosity becomes desire. Then, that desire can no longer be satisfied through the images. In some of these cases, the pornography has led men to commit sexual crimes. Most of those who have committed rape will admit that the seed to their desire to commit their crimes was pornography.