I do not subscribe to Pier's site so I do not get to see his work on an ongoing basis but from what I have read he has an impressive record of accurate predictions.
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[Excerpt.] The Lord is Not On Trial Here Today is a Peabody Award-winning documentary that tells the compelling personal story of Vashti McCollum, and how her efforts to protect her ten year-old son led to one of the most important and landmark First Amendment cases in U.S. Supreme Court history — the case that established the separation of church and state in public schools. The case is little-known by the contemporary American public, yet the McCollum decision continues to have important ramifications for current conflicts over the role of religion in public institutions – from displays of the Ten Commandments in government buildings to student-led prayers at public school graduation ceremonies. [RESUME PBS.]