Neurologists at no fewer than two universities have reportedly been forwarded the video by colleagues with the subject line ‘have you seen this.’ The petal fold — a complex maneuver that requires folding upward while simultaneously pressing inward — is performed with such fluid precision that one researcher described it in a tweet as ‘a masterclass in applied spatial reasoning and I am not okay.’ The tweet got 400,000 likes from people who have never thought about spatial reasoning in their lives.