The lights are on but nobody is at home definition and
Beams illuminate a home, but when it comes to not a soul, they stay unperceived. Dwellings without individual presence stay dark. Absence of people to light up the illumination, not a soul's home to lighten up. Abandoned properties stay empty of illumination, leaving the lamps meaningless. Beam seeks humans, but in no one's residence, there's nobody to illuminate.