No reason, otherwise it wouldn't be useless. Off course, I'm joking. You wouldn't be here if it was actually usesless. It wouldn't have been built either. There are a number of uses/modes to it: ...

Traditionally, the useless machine is a simple one that invites passersby to switch it on. When they do, the machine somehow, some way, turns itself off; usually with a finger or finger-like object… ...

Inkjet circuit printing has been around for at least a decade, but only via equipment that topped $50k, according to Ben Cook, PhD and student at Georgia Tech, which partnered with University of ...