In the installation two beer machines are attached to the wall near to each other.
One is a conventional machine which gives you a bottle of beer after inserting some coins.
The other machine is similar to the first, except that on the front you see a monitor with the words
"Cyber Beer". Upon inserting a coin, the user is instructed to push a lever in the hole where the
bottles come out. By operating this lever, the contents of a beer bottle pour into a glass on the
monitor.
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