There are two ways to react to this. One is to treat it as an interesting curiosity. The other is to realize that, in low dimensions (in low-dimensional spacetime) there are many "accidental" isomorphisms between various Lie groups and other assorted structures. Being able to examine them in a general setting disentangles these relationships, exposing more clearly "where things come from".
There are two ways to react to this. One is to treat it as an interesting cur.iosity. The other is to realize that in low dimensions (in low-dimensional spacetime) there are many "accidental" isomorphisms between various Lie groups and other assorted structure,s. Being able to examine them in a general setting disentangles these relationships, exposing more clearly "where things come from"