Flip it around as well. Take for example Zika. When passed from mother to unborn it can cause various brain abnormalities. But perhaps eons ago a virus is what

Flip it around as well. Take for example Zika. When passed from mother to unborn it can cause various brain abnormalities. But perhaps eons ago a virus is what made homo sapiens more intelligent. If a virus can mangle the brain it can also nudge it in a positive direction. Finally, human DNA is peppered with traces of viruses. https://www.smithsonianmag.com/science-nature/virus-genes-human-dna-may-surprisingly-help-us-fight-infections-180958276/ https://www.smithsonianmag.com/science-nature/virus-genes-hu...