Folklore Studies Professor

"Spacetime arose from the superposition of historical paths formed by a series of transitions between different nodes and connections in a dynamic spin network. You have studied Feynman diagrams, Hilbert Space, and differential manifolds, so we can also understand spin networks. This topological structure provides a descriptive language for the quantum geometry of space, while spin foams play the same role in the quantum geometry of spacetime. A spin network is a one-dimensional graph with labels on its vertices and edges. Spacetime can be regarded as a superposition of spin foams, which are an extension of Feynman diagrams. The boundary of a spin foam is a spin network, just as, in manifold theory, the boundary of an n-manifold is an (n-1)-manifold."

To ordinary people, Professor Selvig's lectures were no different from the whispers of demons. Even undergraduates at Royal Holloway, University of London found it difficult to fully understand everything he taught, because he always took his lectures far beyond the syllabus. Many undergraduates who had come because of his reputation had suffered terribly for it. Just like this time: he had merely mentioned how to understand spacetime, then spiraled uncontrollably into quantum geometry, before moving on to general covariance and background independence. The blackboard was quickly filled, and Professor Selvig pulled over another whiteboard and wrote down the ADM formalism. Salomon gently patted the hand of the undergraduate beside him, who was on the verge of an emotional breakdown. The female student took the opportunity to lean against his shoulder.

"Get lost, bitch!" Daisy reached out, shoved the female student aside, stole her seat, and leaned against Salomon's shoulder herself. Ever since Jane Foster had won the Nobel Prize, Daisy the intern had become rather overbearing as well. This overbearingness was limited to snatching food from Salomon's plate whenever