Yesterday's last BBQ was a family affair scheduled to be over by midnight. At around 0015 everything has already been packed up and three friends and I were chatting in the kitchen. Then Mrs N. came up with this:
"There is a closed room with three lights in it. On the outside of the room are three switches, one for each light. However, from where the switches are you cannot see the lights. You are free to operate the switches. Associate the switches and lights, but you may enter the room only once."
It is supposed to be a classical enigma, but none of us had heard it before. Anyway, with more than 20 years in combined engineering schooling (and more than a few glasses of wine), it took us the better part of an hour to solve it.
Never underestimate the power of fresh wine on a warm night ;-)
"There is a closed room with three lights in it. On the outside of the room are three switches, one for each light. However, from where the switches are you cannot see the lights. You are free to operate the switches. Associate the switches and lights, but you may enter the room only once."
It is supposed to be a classical enigma, but none of us had heard it before. Anyway, with more than 20 years in combined engineering schooling (and more than a few glasses of wine), it took us the better part of an hour to solve it.
Never underestimate the power of fresh wine on a warm night ;-)
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