you still have to see a real icosahedron

Major seismotectonic belts/'plate boundaries' (broken lines) compared with an icosahedron.^[6] 'Plate boundaries' (i.e. seismic belts) meet coincide very closely with the vertices of an icosahedron, which, like the tetrahedron, is one of the five regular polyhedra or Platonic solids.

But you still have to see a real icosathumb ... And even a real dodecahedron - made of pentagons - is regular, a property that the plaque boundaries do not exhibit.