[coldtea]

Well, "rotating the diagram in spacetime" is also exactly what you do when you move your hands while holding the printout of a diagram...

(In this case though it's about rotating what's shown in the diagram, that is the interactions pictured, not the diagram itself :-))

[vanderZwan]

This is as deliciously anti-climactic as finding out what "non-Euclidean space" means after hearing it a lot in Cthulu-like horror settings