Presumptuous, pretentious, or just plain hilarious? Definitely not practical. There is no real design reason behind making an ordinary chair stand on just one (or two) of its legs, but the designer who (literally) hacked this chair to do so contends that sometimes designers need to challenge their perception.
Pascal Anson readily admits that this is a piece of sculpture, but it is not pure artistic invention. Mass production misses the point. Who does not remember trying to balance on a single leg of a four-legged chair? If you have not tried this trick, well, there is a first time for everything – just make sure to keep yourself from falling over by holding onto something solid (like a table or a desk).
In the video, he brings up a quote that might help folks who see this work as futile understand it. In essence, he argues that art can cause us to stop, think and do something different. We may never cut angled sections from the bottoms of our chairs, but if nothing else we can be entertained or inspired by the act much like we are by a well-cast illusion from a clever magician.