(By the way, left-handedness seems to be the result of inheritance of two copies of a gene which does not impart strong right-hand preference. The right-handed gene is dominant--in 25% of the population has no copy of this gene, presumably 12.5% percent of these non-handed individuals develop a righthandedness anyway, and 12.5% develop a tendency toward left handedness. At any rate, being left-handed doesn't seem to have any special effect on language acquistion or learning or on anything else innate to humans.)