This does not mean that all artists are left-handed and all accountants are right-handed. There are many exceptions. Some right- handers have a strong right brain,and some left-handers have a strong left brain.The best thing be left-handers have a left would to use both right and left sides of the brain. There are people who learn to do two things at the same time. They can answer practical questions on the telephone (which uses the left brain) and the same time play piano(which uses at the right brain), but this is not easy to do