The darkest chemistry joke in the galaxy! Lead's "improvement" of systems is pure toxic sarcasm – it's actually a neurotoxin that causes brain damage, reproductive issues, and death. Yet humans happily added it to EVERYTHING for centuries. Roman elites literally drank lead-sweetened wine while their plumbing slowly poisoned their empire. We finally banned it from gasoline and paint in the 1970s after realizing our collective IQ was dropping faster than a neutron in a lead shield. The punchline? We're still finding it in soil, old houses, and occasionally water systems. Nothing says human ingenuity quite like discovering something is deadly and taking a few millennia to stop using it.