Jeff saw the "Listening/Sounds Package" and pulled up the information for it. It read:
"The Listening/Sounds Package is one of the few packages that can be applied simultaneously with other Transformation Packages. This package allows the Chronivac to assign any change(s) to a specific sound. This sound can be anything from a particular song on the radio to a chirping bird. These changes can be assigned in one of two ways. The first is to a specific target(s) specified by the user but is within range of the emitter. For example: when a particular subject hears a particular sound, an assigned change is triggered. The second way is to assign a change to a particular sound for general usage, which the Chronivac connects to the Internet in order to properly assign the sound. For example: when a particular sound is made, an assigned change is triggered in everything (the user can assign what species the change(s) affect) that can hear it."
Jeff thought about it for a moment. The way he understood it was that he could assign a target, like his older brother Nick, so that whenever he hears a sound, like a barking dog, he will gain 10 pounds. Or he could make it so that every person who hears the song "Who Let the Dogs Out?" will gain 10 pounds.
Jeff grinned at the possibilities.