"'Having more distributed language abilities [as lefties generally do] probably makes the system more complicated...' That could explain some studies that correlated risk of autism, ADHD and dyslexia with being left-handed or ambidextrous." (International Left-Handers' Day is August 13th!)
David Bowie. The Incas thought left-handers were capable of healing and possessed magical abilities. The North American Zuni tribe believed left-handedness signified good luck. However, there are plenty of negative connotations attached to left- handedness, Think of words such as "sinister" and "gauche," which mean or connote "left."