Conventional SETI (Search For Extraterrestrial Intelligence) strategies have long been built on the idea that intelligent extraterrestrials (ETI) would aim to communicate with other intelligent civilizations along a very narrow band of the electromagnetic spectrum, preferably in the radio spectrum. The hypothesis is that any putative technological civilizations out there would use electromagnetic signaling for virtual meetings at a so-called galactic watering hole. That is, a band of radio-quiet frequencies extending from 1420 MHz to 1662 MHz, encompassing the spectral lines of hydrogen (H) and hydroxyl (OH), both of which can combine to form water. The idea of a cosmic electromagnetic watering hole makes for a powerful metaphor for potential galactic communication between advanced technological intelligences. If indeed such intelligence is out there.…