Exactly, as humans you won't know everything... but you CAN know enough to roughly classify what to "google" for... And if you can google a problem summary, you could identify from a select list of domain specific AI models to use one or more to aggregate work results. And if a person can do that, a model can be trained to do/leverage the same.

You can have a domain limited classification model that then passes the query/work to best match model(s) that do the work... then rollup the results. Basically two very cheap requests instead of one much more expensive one.