Handedness

Do you lean left or right? 90% of individuals are right-handed, therefore if you're left-handed, you should probably consider yourself a bit of an outlier. Now contemplate why you are either one. Don't worry if you are unable to come up with a response. Science is also at a loss for an answer.

The idea of handedness is a tiny human evolutionary oddity that appears to imply nothing at all. Why should one hand rule over the other when performing daily tasks? By no means is it a conscious decision, and it appears to be both biological and genetic. But that still doesn't get at the core of why it occurs in the first place.

The brain's speech and language centers are the subject of one theory. They are located in the left hemisphere, which is also in charge of the right hand. Because we communicate with our hands—especially when we write—the right hand has increasingly come to predominate in most of us as communication has developed.

In addition, different gene alleles could explain why some people are left-handed despite the first idea and how handedness develops. A person may go left or right if they are born with a particular gene allele. This is only hypothetical at this point and by no means certain.