Why are people left-handed? There’s not much difference between lefties and righties.
Lefties excel in visual-spatial tasks and more lefties are geniuses than righties.
Handedness might be related to speed. Using one hand saves time and in the ancient world, handedness could have made the difference between life and death.
Early survival favored lefties due to the surprise punch from the left in a fight. Better warriors had more access to women and had more children.
Societies with high levels of cooperation have more people with same-handed dominance than those that compete suggesting.
Today, left-handedness may be related to problems during fetal development or birth. Lefties have higher rates of dyslexia, schizophrenia, allergies and lupus.
Regardless of the reason for being a southpaw, nature has a plan.
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