Zev Yaroslavsky, who served as city councilman and county supervisor in Los Angeles for 40 years, spoke with the California Sun about the evolution of L.A. governance. Politics today is “much more coarse, meaner … less of ‘how do we solve the problem’ and more of ‘how do I score a political point,’ ” he said. But he expressed faith in the county’s young, energetic voters who are holding officials accountable. “Voters are not as foolish as the political class thinks they are. They have a pretty good B.S.-sniffing meter, they’re attuned to what’s going on, and they know what they want,” he said. Now director of the Los Angeles Initiative at UCLA Luskin, Yaroslavsky shared results of the annual Quality of Life Index, which identified housing costs as residents’ top concern. Homelessness, he said, is “one of the great stains on our society,” caused by a wealth gap that lies at the root of most of our social problems.