The article mentions this towards the end, but dismisses their utility. I wonder when the opt-out period begins -- on acceptance of the contract, presumably. W

The article mentions this towards the end, but dismisses their utility. I wonder when the opt-out period begins -- on acceptance of the contract, presumably. While many companies also include an opt-out provision on arbitration — typically between 30 and 45 days — few consumers take advantage of it because they do not realize they have signed a clause to begin with, or do not understand its consequences, according to interviews with lawyers and plaintiffs.