In EQ1, a level 10 was expected to adventure in zones designed for level 10. If they went to a dungeon like Lower Guk, they would get insta-gibbed by the level 40+ mobs there. In ESO games, a level 10 could go anywhere they wanted to whenever they wanted to because every mob they fought would be scaled to their current level and thus beatable. That is the "magic" of the ESO series. The world was open sandbox allowing you the freedom to explore it however you wanted to whenever you wanted to. The ONLY way such a design could work was to autoscale the difficulty of every fight to your current level. Such a design approach is completely unrealistic in a MMO.