Unpredictability

It takes logic to become wise about a problem;

https://tse1.mm.bing.net/th?id=OIP.gfGcxiuBBtPdTNjyrL0-tQHaEZ&pid=Api

whereas, you must have wisdom to think logically about the outcome.

http://2.bp.blogspot.com/-PLEqNV8ej7c/VKW5PbljEnI/AAAAAAAAFJU/r9WjQnsh4zA/w1200-h630-p-k-no-nu/wise_old_man_by_poeheej-d2ynanw.jpg

http://wwwpopblogger.blogspot.com/2015/01/words-of-relevance-wise-old-man-to.h