Thats a foolish thing to say.
How about studying everything from sec1 to uni that will sure be
safe 100%.
But the problem is the more you study, the more things you have to
remember, and the more time you would waste, which could be spent
on revising other subjects. In the end it doesnt benefit you at
all.
But then, you have to be sure that "So and So" definitely wont come
out for exams.
