I don't understand the reasoning here. Isn't that like saying "normally when my office gets hot the AC turns on to try and curb it. This hasn't happened, which

I don't understand the reasoning here. Isn't that like saying "normally when my office gets hot the AC turns on to try and curb it. This hasn't happened, which implies that the increase in temperature is not going to last too long." ... Doesn't the lack of AC imply exactly the opposite, that the temperature rise might be more significant than usual, and perhaps the AC is broken?