The origins of the dynasty, on the other hand, are shrouded in mystery. The Tel Dan Stele, as aforementioned, remains the only mention of David himself outside the Bible, and the historical reliability of the United Monarchy of Israel is shoddy, at best. The Stepped Stone Structure and Large Stone Structure in Jerusalem show that Jerusalem was at least somewhat populated in King David's time, and lends at least "some" credence to the biblical claim that Jerusalem was originally a Canaanite fortress; however, Jerusalem seems to have been barely developed until long after David's death, making it hard to believe it could have been the empiric capital described in the Bible. In David's time, the capital probably served as little more than a formidable citadel, and the Davidic 'kingdom' was most likely a loosely-confederated regional polity, albeit a relatively substantial one. On the other hand, excavations at Khirbet Qeiyafa and Gath were interpreted by some to show that Judah was capable of accommodating large-scale urban societies centuries before minimalist scholars claim, and some have taken the physical archaeology of tenth-century Canaan as consistent with the former existence of a unified state on its territory, as archaeological findings demonstrate substantial development and growth at several sites, plausibly related to the tenth century. Still, in light of a general lack of material evidence explicitly indicating a United Monarchy, it cannot be positively ascertained whether some portents of the biblical narrative of the United Monarchy and the origins of David's dynasty have any historical basis. Even so, as for David and his immediate descendants themselves, the majority position, as described by Israel Finkelstein and Neil Silberman, authors of "The Bible Unearthed", espouses that David and Solomon may well be based on "certain historical kernels", and probably did exist in their own right, but their historical counterparts simply could not have ruled over a wealthy lavish empire as described in the Bible, and were more likely chieftains of a comparatively modest Israelite society in Judah and not regents over a kingdom proper.