Palantir is often called a data broker, a data miner, or a giant database of personal information. In reality, it’s none of these—but even former employees struggle to explain it.Illustration: WIRED Staff; Getty ImagesPalantir is arguably one of the most notorious corporations in contemporary America. Cofounded by libertarian tech billionaire Peter Thiel, the software firm's work with Immigration and Customs Enforcement, the US Department of Defense, and the Israeli military has sparked numerous...