Do we need both sides of the brain?

Nice thought piece on left and right brain thinking from Big Think. Enough with the talk about being left-brained or right-brained, we need both halves regardless of the discipline. Can you imagine being a decision-maker who only used the left half of the brain? Even a systematic trader needs the right half to be a better manager.

The left brain is our analytical side, but if money management is a game against other market participants, there needs a creative component that sees the big picture. Creativity allows for new models and approaches. The right brain provides a mechanism to think differently. It allows for story-telling and visualization which are necessary to see through all of the numbers and spreadsheets in finance. Give me both sides of the brain.  I can always use rules to control the emotions, but I need the creativity.