Can perfection be improved?

“Perfection cannot be improved”. This is what my husband says about our daughter who is a master in doing careless mistakes when it comes to her mathematical skills. No matter how much she tries, she ends up committing new silly mistakes each time. Starting from the basic addition- subtraction blunders, her level has climbed up so high that last year she ended up doing an impossible,undefined division defying all the rules of mathematics.Our every parent-teacher meeting has the same outcome, “She’s sweet, intelligent but needs to be more careful.” Now I am compelled to say that my daughter is a perfectionist at her innovations of careless mistakes.