I've skimmed up and down and read some sections a few times - I'm still not 100% sure what the main conclusions are. A summary section would make the article m

I've skimmed up and down and read some sections a few times - I'm still not 100% sure what the main conclusions are. A summary section would make the article more accessible and valuable to others. My understanding is that the main point here is: - some problems require reasoning through many steps of computation, - transformers have limited depth, so cannot solve problems that require many steps. Am I missing anything else?