Of course Euler’s Formula and, subsequently, Euler’s Identity are very close to the WTF-Model. I’ve had suspicions on the whereabouts of the different constants, namely e, i, and π. Even though it’s perspective dependent, it is pretty clear to me that i, the imaginary unit, is directly in the center. But from the peripheral aka global perspective, as from the local one, i is replaced by the prime numbers. I stumbled upon e, Euler’s number (2.