David Rudovsky of the Law School said the reversal of Bill Cosby’s conviction may not set a new legal precedent due to the particular circumstances, as the overturn focused on a DA’s promise that Cosby wouldn’t be charged. “This may be a one-off case. It’s hard to envision facts like this happening again in the future,” he said. “If it does, it tells the DA: ‘Be careful. Don’t promise more than you’re willing to give.’”