Support Vsauce, your brain, Alzheimer's research, and other YouTube educators by joining THE CURIOSITY BOX: a seasonal delivery of viral science toys made by Vsauce! A portion of all proceeds goes to Alzheimer's research and our Inquisitive Fellowship, a program that gives money and resources directly to growing science channels here on YouTube! https://www.curiositybox.com https://twitter.com/tweetsauce https://www.instagram.com/electricpants Special thanks to @chubbyemu and Evelyn Lamb (https://twitter.com/evelynjlamb) for answering my questions about the body and holes, respectively. wardrobe by: https://twitter.com/dasharez0ne An article from Evelyn about holes: https://blogs.scientificamerican.com/roots-of-unity/what-we-talk-about-when-we-talk-about-holes/ the philosophy of holes: https://plato.stanford.edu/archives/spr2014/entries/holes/ Coffee mug + doughnut sculptures and video from @henryseg : VIDEO: https://www.youtube.com/watch?v=9NlqYr6-TpA BUY: https://www.shapeways.com/product/6CJQ9GXWW/topology-joke?li=shareProduct&& sun footage: https://svs.gsfc.nasa.gov/12326 anatomy of the nasal cavity: https://www.youtube.com/watch?v=wJEenATGwg8 Supernumerary Puncta: https://link.springer.com/chapter/10.1007/978-981-10-5616-1_21 accessory ostium: https://www.icoi.org/glossary/accessory-ostium/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3266099/ 3D visual effects: Eric Langlay Toilet scene effects: me and Jake Roper and Eric Langlay music: Jake Chudnow and Audio Network Send me Stuff! Michael Stevens PO Box 33168 L.A. CA 90033