A machine which was dubbed as the 'most useless' has found itself extremely popular on the internet.
Built by US inventor Claude Elwood Shannon, based on an idea by another American scientist Marvin Minsky, the machine is made of wood and it has a switch on top.
Dubbed "The Most Useless Machine Ever", it isn't available in shops.
A short video of the machine in its working form has been watched by close to 300,000 times since it was posted on YouTube, reports The Sun.
Net users have been tickled by its sheer pointlessness.
One said: "I love this machine! It looks like there's some cranky robot in there trying to be left alone."
Another wrote: "This is fantastically great. I love this machine. Priceless."