Doodle Scientist's Useless Invention

“A doodle scientist in a tiny lab coat has just activated a machine made entirely from rubber bands, paper clips and empty toilet rolls, the machine is working perfectly but doing something completely useless — converting pencil shavings into more pencil shavings at tremendous speed and noise, doodle colleagues consulting clipboards pretending to understand the data, a doodle hamster powering the whole thing on a wheel looking extremely professional about it, graph paper walls covered in equations that all equal nothing”