A major derivatives exchange just dodged another bullet. Their Illinois data center—the one powering global futures trading—went dark Friday and sent shockwaves through world markets. What caused it? Cooling systems failed catastrophically. Now they've scrambled to install backup cooling infrastructure, basically admitting their redundancy planning had gaps you could drive a truck through. Makes you wonder how many other critical financial systems are one AC unit away from chaos. The fact that a climate control failure can halt billions in daily trading volume says everything about how fragile these centralized structures really are.