My revolver won't necessarily shoot you, either.
It is not at all surprising that those devices caused the result they did, don't you think? Predictable, even.
It's not something that would panic me. Others are obviously different.
It's not suprising that packages and briefcases left on a park bench cause a similar but smaller reaction. So should we outlaw briefcases just because some people got too involved watching "24" the night before? The Boston are as predictable as most lefty totalitarians are.