Full Idea
One could think that the structure of thought has more in common with that of maps or diagrams, and is not particularly language-like.
Gist of Idea
The alternative to a language of thought is map-like or diagram-like thought
Source
Tim Bayne (Thought: a very short introduction [2013], Ch.2)
Book Reference
Bayne,Tim: 'Thought: a very short introduction' [OUP 2013], p.23
A Reaction
It seems unwise to be ensnared by analogies on this one, since the phenomenon is buried deep. You can no more infer what goes on underneath than you can infer electrons from looking at trees?