The Cowboys apparently don't believe in the saying, "those who don't remember the past are condemned to repeat it" — at least in terms of their quarterback position.
In their current depth chart, oft-injured Tony Romo of course is the starter, and he's a top 10 QB when available. Kellen Moore, with his two career starts (0-2 record) and 104 passing attempts is listed as the No. 2 quarterback. Dak Prescott, the rookie fourth-rounder, is in the fourth spot now behind Jameill Showers (who?) but presumably will move up to second or third string as training camp unfolds.