Warning: This is a very easy puzzle. So if you hate easy puzzles, you may please move on. Otherwise, continue reading.
We had a power outage in our apartment for several hours last night and this morning (I am a grad student and live in off-campus private housing with two housemates). Since staying at home was impossible in the cold (the heating had stopped and the water was ice-cold), I came to school at 10:00 am and started doing my work in the warm, snug comfort of my office. After some time, I decided to find out if the power in my apartment was restored, so I did something that convinced me that it was. No, I did NOT go back home or call any person to find out if the power was back on. I did not meet anybody either. What did I do ?
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