> There are clearly ways to mitigate that problem, including the traditional ones > of using relatively deep hierarchy and/or tagging the main part of names with > differentiating attributes, but I think that either the issue must be taken > seriously or someone will need to convince the large population of people > named Alice (or Bob, or, for that matter, Christian, John, or > Michael) in the world that, e.g., > > AliceqrfQ9h595S5Rg*uv!BsVSP2!QY8sSx^pQ@ar8AjytEdGbK^FG3#nMkVYrA > is an appropriate and easily remembered name. People remember names they use. And usually years and memorable dates. The URL namespace provides global uniqueness; combine a URL with a year (or date or date/time) and you have permanent IDs. There's a simpler way to generate short understandable and permanent names. You don't have to tag any other parts of names with other differentiating attributes. https://www.ietf.org/archive/id/draft-masinter-dated-uri-08.html explains the idea in more detail. Yes, the initial "tdb:" might be implied by the context. You can use as the base URL any scheme registered in IANA.