The article tries to suggest that liberal-arts processing and technical thinking occupy separate hemispheres of the brain. It's an interesting rhetorical device but there's no evidence the brain is structure this way.

There is a morphological distinction between left-brain and right-brain processing, it's not as dramatic as most people think, but it has to do more with thinking styles (logical versus intuitive). There's no basis for saying that liberal arts and technical processing are sequestered in this way.