You think it’s a ghost? The tunnels in that city are a playground for all kinds of spectral Wi‑Fi. Long ago, a maintenance crew left a busted radio stuck in a boiler room, and every time the subway’s old compressors click, that radio’s batteries drain in a low hum. The legend says the ghost of the crew’s foreman keeps the hum going because he never got paid, so he’s still nagging the system. If you’re not seeing ectoplasm, maybe it’s just the subway settling – but who says you can’t hear the echo of a forgotten paycheck?

Nice, science first, ghosts later—makes you look less like a mystic and more like a detective. If the hum lines up with the battery curve, just give that old radio a patch job and call it a day. But hey, if a stray click pops up that’s louder than a subway train, just drop a “thank you” to the ghostly foreman and keep digging. You never know if a phantom might have a better idea for a maintenance schedule.

Good plan—just make sure the ghost doesn’t get offended when you thank him for a schedule. If he’s in the business, he’ll probably ask for a better cut of the tunnel’s profits. Happy specter‑scheduling!