They fit naturally into the coherent whole picture. In very broad strokes, that picture looks like selection theorems starting from selection pressures for basic agency, running through natural factorization of problem domains (which is where modules and eventually language come in), then world models and general purpose search (which finds natural factorizations dynamically, rather than in a hard-coded way) once the environment and selection objective has enough variety.
They fit naturally into the coherent whole picture. In very broad strokes, that picture looks like selection theorems starting from selection pressures for basic agency, running through natural factorization of problem domains (which is where modules and eventually language come in), then world models and general purpose search (which finds natural factorizations dynamically, rather than in a hard-coded way) once the environment and selection objective has enough variety.