A person walks up a hill starting at 8 pm and arrives at the top at midnight. The next day the same person walks down the hill following the same path, again starting at 8 pm and arriving at midnight. Is there necessarily a point on the path where the person is at the same time on both days?

Walk Solution

lib/config.php:156: Notice: Undefined variable: accept

lib/DbaDatabase.php:134: Warning: dba_replace() [<a href='function.dba-replace'>function.dba-replace</a>]: You cannot perform a modification to a database without proper access