أنشئ حسابًا أو سجّل الدخول للانضمام إلى مجتمعك المهني.
I will add only two words as below:
The best planner is not only the person who can make perfect plans, but also who can cope with big problems.
The planner has all possibilities from (0% --> Total Failure, to 100% Complete Success). So, as a possibility, things may go perfect as planned. In this case, the reason may be due to considering those "Big Problems".
For the unexpected "Big Problems" .. Your phrase is right!
As you said,the best planner is not person but the GOD ALMIGHTY.we can manage or cope with big problems in the real life with accurate plans and neat implementation.The real life planning and finding solutions to the big problems is varying with personas across the world.