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I went back and forth on your first and point and instead just focusing on comments made about the literature like the one I cited in the article just now.  I'm actually fine with either.  The sources don't actually give a range, sadly...so I just went and found the ranges myself!  But I also think including in that at least some studies have been as few as 3 seconds would be valuable.  ON your second point, that's been covered as you were writing this message to me! )  drop me a line (note: not a bot!) "