The Basics of Left-handedness

We discuss the basics of left-handedness. Why are some people left-handed? How many people are left-handed? How many ambidextrous? Are left-handed people more common in certain countries? Are males or females more often left-handed? Are left-handed people right-brained? Are left-handed people more artistic? Can you switch you handedness? What daily microaggressions do left-handed people have to deal with?