-----Original Message----- From: Mark A Mandel [mailto:mam at theworld.com] Sent: 14 July 2003 02:03 To: Philip Hart Cc: dragaera at dragaera.info Subject: Re: started rereading _TPotD_ >Studies in our world have shown that people adapt better to a longer cycle, like 28 hours, than to a shorter one, like >20. I seem to remember watching a show that showed long term (several months) study which deprived the test subjects of any external stimulus as to what the time was. The subjects gradually moved to a 27-28 hour cycle after about 2-3 months and stayed on that til the end of the trial. I think they were claiming that the Earth's day used to be longer.... But I'm not sure if that would be right. The Sun's gravity is I believe is slowing the earth's rotation (Same reason why we always ee 1 face of the moon). Mark.