fossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 1 day agoNihilism spectrummander.xyzimagemessage-square17fedilinkarrow-up1502
arrow-up1502imageNihilism spectrummander.xyzfossilesque@mander.xyzM to Science Memes@mander.xyzEnglish · 1 day agomessage-square17fedilink
minus-squareitslilithlinkfedilinkEnglisharrow-up3·edit-27 hours agoNot true, topolgically the route left nostril -> sinus -> right nostril is another hole. So is any nostril -> sinus -> mouth. ears have the eardrum, so they don’t count. For the more formal definitions of topological holes, look up Betti numbers, I think there’s a VSauce video about it? For humans, the number of holes is at least 3 (but I’m sure I’m missing many more holes). Unless you’re missing the entire septum.
Not true, topolgically the route
left nostril -> sinus -> right nostril
is another hole. So is
any nostril -> sinus -> mouth.
ears have the eardrum, so they don’t count.
For the more formal definitions of topological holes, look up Betti numbers, I think there’s a VSauce video about it? For humans, the number of holes is at least 3 (but I’m sure I’m missing many more holes). Unless you’re missing the entire septum.