design a better arm

anyone has any ideas on how a better arm will look like?

It's my homework for Lesson in thinking class. (it is to stimulate our creativity and process of thinking) In the past, classes have come up with multiple arms like an octopus, arms that can be extended.....I thought it was quite typical and boring. No matter how well we come up with a design, it can't be beaten by the orignal creation .

Questions like these came into my mind as I began to think of it.
what if a person has no arms? Does it mean anything? Does it mean that he or she can't function anymore?
Why do we have to design a better arm? Aren't what we have now good enough? Do I just submit a pic of our original arm since we are created to be this way ? How do I tackle this question?
so much thoughts....

If I would to answer the question, I will have no doubt about the reason why human's arms are created this way , if a person is physically healthy. A Creator would have thought of the many uses of the product before the creation.

You may probably know what I am going to say :

How much more, when the our Big Creator knows everything from the beginning to the end? He makes no mistake.