It’s been a long time since California’s pension systems were responsibly managed. Back then, they made conservative investments, paid modest but fair benefits to retirees, and did not place an unreasonable financial burden on taxpayers. But a series of decisions and circumstances over the past thirty years put these pension systems on a collision course with financial disaster. And like a progressive, initially asymptomatic disease, it is impossible to say exactly when these pension systems crossed the line from health to sickness…