Complex systems such as climate and the financial markets have both positive and negative feedback.

FORBES: Chaos Theory, Financial Markets, and Global Weirding

Business owners may be able to make laying the law down easier by offering employees both positive and negative feedback on a regular basis, says Peter Cappelli, a professor of management at the Wharton School in Philadelphia.

WSJ: For Some Bosses, Tough Love Isn't Easy to Give

BrandIndex scores range from 100 to -100 and are compiled by subtracting negative feedback from positive.

FORBES: Nine West Concept Stores Resonate

We want attention paid to how we move through the world and we want to get feedback, be it positive or negative.

FORBES: What it means to 'Not believe in privacy'