I mean, over ninety percent of people are righties.
我的意思是说，百分之九十以上的人都是使用右手的。
It doesn't become an advantage if lefties are just as common as righties.
但如果左撇子和右撇子一样常见的话，那么它也不会演变成这种优势的。
"Righties think right is good, and lefties think left is good," Casasanto concludes.
Casasanto总结说：“右撇子认为右边的好，左撇子认为左边的好”。
If both parents are left handed, 50% of their offspring will be left-handed. Two righties only have a 2% chance of having a lefty.
如果双亲都是左撇子，他们的孩子有50%的可能是左撇子。两个右撇子的人生出左撇子的孩子的几率只有2%。
If both parents are left handed, 50% of their offspring will be left-handed. Two righties only have a 2% chance of having a lefty.
如果双亲都是左撇子，他们的孩子有50%的可能是左撇子。两个右撇子的人生出左撇子的孩子的几率只有2%。
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