From: helbig@asclothestro.multivax.de   
      
   I once saw a video in which, discussing the claim that Einstein said   
   that introducing the cosmological constant was his biggest blunder,   
   Steven Weinberg said something along the lines that later neglecting it   
   was the actual blunder.  This MIGHT be something similar to his   
   discussion in an article in Physics Today   
      
      https://doi.org/10.1063/1.2155755   
      
                  AUTHOR       = "Steven Weinberg",   
                  TITLE        = "Einstein's Mistakes",   
                  JOURNAL      = "Physics Today",   
                  YEAR         = "2005",   
                    VOLUME       = "58",   
                    NUMBER       = "11",   
                    PAGES        = "31",   
      
   Despite spending way too much time searching YouTube, I can't seem to   
   find it.  The video itself is probably longer than half an hour.   
   Perhaps someone here can track it down.   
      
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