Have you heard the term Mercury in Retrograde?  Maybe not if you're a logical thinker, but certainly if you're into astrology.  This is sci-tech day for this blog site, so why am I posting on something that is in the same pot with seances, snake oil, Heaven and Donald Trump? Well, for one, Mercury does go into retrograde with Planet Earth.  This is a scientific fact.   Watch this short explanation .  It would take me too many words to cover this subject.  But if you somehow got lost in that lesson, here is a  longer version with Neil deGrasse Tyson . One of my favorite topics, even on science day, deals with excoriating Donald Trump.  I sometimes treat astrology in this manner.   Carl Sagan had a baloney detection kit.    All goes back to Mercury, the Roman god of commerce and patron of circulation.   Some history . When I heard the term Mercury in Retrograde, and how this phenomenon is taken seriously by those who believe in astrology, I thought, who really believes in this st