Global markets are becoming increasingly complex due to factors like big data, shared economics, and the potential for chaotic behavior in complex systems. As complexity rises, it becomes more difficult for managers, businesses, and governments to understand these interconnected systems. Small disturbances can now have large, wide-reaching effects through the "butterfly effect". Examples include technological glitches causing stock market volatility and issues with the Affordable Care Act website exacerbating problems in the US healthcare system. A emerging "shared economy" based on sharing goods and services provides alternatives but also introduces new complexity and uncertainty into the global economic system.