A mysterious and unyielding noise caused a near-riot in our neighborhood last week. For several days straight a constant beeping could be heard from one end of the block to the other, every few seconds, all day and all night. The sound penetrated every room of our house and was beginning to make us crazy. More than one of our neighbors called the police and a nearby construction site was searched but the source remained unknown. Then, one day late in the week, for a reason neither myself nor any of the people with whom I share a dwelling could figure out, the noise stopped.
Today we found out why.