This Epiphany came from piecing together the evidence that a) the T3/T4 margins in Vermont correlate with the WMMS and a readvance which Thompson et al, report as taking place in Older Dryas time, which is dated as about 14.0- 13.8 K.A., and b) that the T8 ice margin likewise marks a readvance that took place after the initial development of the Champlain Sea at the marine limit, 1 The dating of T8 as being at a later Champlain Sea time, after the initial opening of the Sea, is documented by till and ponded water sediment on the upper surface of Champlain Sea deltas in the Missisquoi Basin. Whereas the Champlain Sea strandline is diachronic, representing different times at different places, in general the age of this incursion in Vermont, as reported by Cronin et al,2 Cronin T., et al, 2008, Impacts of post-glacial drainage events and revised chronology of the Champlain Sea Episode 13-9 KA; Paleogeography, ,Paleoclimatology, Paleoecology ; V. 262 Issues 1-2, PP. 46-60 is approximately 13 K.A. Taken together, therefore , this epiphany is the realization that the totality of the recessional record mapped here on VCGI represents a very late glacial time span, and further that the recession of the ice margin from T3/T4 to T8 time was brief, and therefore must have occurred quite rapidly. As stated elsewhere this observation for me was quite surprising, but is supported by evidence for calving ice margins, Disconnections, Disaggregated ice margins, and other evidence of destabilization of the ice sheet associated with meltwater in a reverse gradient setting, all of which is generally recognized as being associated with rapid ice margin recession.