When we asked noted Lenin scholar Lars Lih to review for us the new collection edited by Richard Day and Daniel Gaido -Witnesses to Permanent Revolution: The Documentary Record (Haymarket, 2010) -we never expected to receive what emerged as a full-fledged article ("Democratic Revolution in Permanenz," October 2012). Lih, in our view, raised important (if controversial!) observations about the thinking of the participants in the European debate within left Social Democratic, or Communist, circles in the first two decades of the 20th century, and especially about the apparently distinctive position of Trotsky in that debate. Day and Gaido gladly accepted our request for a response; here they are joined by Alan Shandro and john Marot, each of whom presents a unique perspective, followed by a rejoinder from Lih. Whatever the reader makes of the various positions in this discussion, we believe it demonstrates without doubt the remarkable richness, and enduring relevance for the present, of the source texts, and of the revolutionary experiences within which these texts emerged.