/sci/ - Science & Math

Is it correct to determine race via skin color and facial structure when there are actually only two races?

Handedness is genetic:
>However, more recent studies suggest that multiple genes, perhaps up to 40, contribute to this trait. Each of these genes likely has a weak effect by itself, but together they play a significant role in establishing hand preference.
https://ghr.nlm.nih.gov/primer/traits/handedness

Cognitive ability is positively correlated with left-handedness:
>Investigation of the link between higher order cognitive functions and handedness
https://www.tandfonline.com/doi/abs/10.1080/13803395.2013.778231?journalCode=ncen20
>The brain connection: the corpus callosum is larger in left-handers
http://science.sciencemag.org/content/229/4714/665.long
>Are left-handed people more gifted than others? Our study suggests it may hold true for maths
http://theconversation.com/are-left-handed-people-more-gifted-than-others-our-study-suggests-it-may-hold-true-for-maths-79059

It is well-known that left-handers are overrepresented among geniuses, so this data only confirms what we've already observed.

I propose that race is binary, not some bizarre spectrum based on arbitrary visual characteristics.
There are left-handers, who are statistically likely to be above average, and then there are right-handers, who are on average more likely to be subhuman.
Serious discussion only please, absolutely no trolling.