Theory of mind is a hard topic to investigate as there is a large literature on it and Agi’s talk was very nice!
From the paper, I like the analogy they made between number cognition belief reasoning, and how they use support from infants, nonhuman animals, and human adults. However, for the numbers they talk about signature limits that provide key evidence of distinct systems for number processing. The potential signature limits for belief reasoning in their account is not that clear to me.
Also, how does their two-systems account explain the conflicting debate resulting from infants looking time patterns as a support for false-belief understanding and the failure to pass standard false belief tasks until the age of 4? They have an explanation like this: "These findings are clearly consistent with the possibility that an early-developing system for tracking belief-like states is guiding children’s eye movements, and a later-developing system guides children’s explicit judgments about beliefs”. I did not understand their explanation and how this is consistent.
Lastly, there was a session at last year’s BCCCD about the egocentric and allocentric phases in development and theory of mind. It was quite interesting, and I am wondering about Agi’s thoughts about that account.