Some things which are hard for someone might be easy for someone else. Usually academic things like calculus are seen as hard, but there are many hard things in

Some things which are hard for someone might be easy for someone else. Usually academic things like calculus are seen as hard, but there are many hard things in day to day life, like selling anything to unwilling buyer, handling a rude customer with calm and much more. They too are hard and calculus guys can not do them well.