Every day the Things to Know podcast answers a general knowledge question to help you develop your knowledge easily.

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This week, a question that makes sense: but why are there more right-handed people than left-handed people?

Yes why ?

Right-handed people represent between 85% and 90% of the world's population.

This very large predominance is explained first of all by the way in which the embryo's brain develops.

Indeed, the left hemisphere develops first, around the 8th week.

However, this hemisphere directs the movements of the right part of the body.

This is why ultrasound scans taken at this time of pregnancy show that most fetuses are already sucking their right thumb.

They are undoubtedly future right-handers.

Then, second reason, the mother's uterus developing further to the right, the fetus is placed there in a certain way.

He sits there upside down, back facing left.

However, this position gives more space to the right arm, which the fetus gets used to using more than the left.

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