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YES, THERE IS A POINT ALONG THE PATH THAT THE MONK OCCUPIES AT PRECISELY THE SAME TIME ON BOTH DAYS. IF YOU ASSUME THAT THE THERE ARE TWO MONKS, ONE DOES THE ROUTE FROM THE TOP, AND THE OTHER FROM THE BOTTOM. AT SOME POINT, THEY MUST MEET. THERE'S YOUR POINT 28 DAYS. UNTIL THE 27TH NIGHT, THE FROG WOULD HAVE MANAGED TO SCALE A HEIGHT OF 1 METER PER DAY OR 27 METER IN TOTAL. ON THE 28TH DAY, HE WOULD HAVE CLIMBED 3 METERS DURING THE DAY THEREBY COMPLETING HIS TASK BORIS PLACED THE FLUTE DIAGONALLY IN A SUITCASE THAT MEASURED 1 METER BY 1 METER. THIS SUITCASE WAS QUITE ACCEPTABLE TO THE POSTAL OFFICIALS ITS SIDES MEASURED 1 METER. FROM CORNER TO CORNER, IT MEASURES 1.414 METERS - THE SQUARE ROOT OF TWO THE MAN WOULD TAKE 47 DAYS TO COME OUT OF THE WELL. ON THE FIRST DAY, THE MAN CLIMBS 4 METERS UP AND SLIPS 3 METERS DOWN, THEREFORE HE ONLY CLIMBS 1 METER UP PER DAY. ON THE 46TH DAY, HE WOULD HAVE CLIMBED 46 METERS. ON THE 47TH DAY, HE WOULD CLIMB 4 METERS TO REACH THE TOP (46 + 4 = 50 METERS) OF THE WELL, THEREBY COMPLETING HIS TASK. HE WILL NO LONGER SLIP FROM THE WELL AS HE IS ALREADY OUT OF THE WELL AFTER COMPLETING HIS TASK