As highlighted in the Atzil et al., (2018) -paper, there is robust empirical evidence suggesting that our social interactions, especially throughout childhood do shape our brain development in good and bad. Considering that our brain uses environmental input to construct expectations and schemas, and that humans tend to live in environments filled with social interactions, I am having a hard time imagining an argument against the relevance of the 'social brain' -concept in cognitive science. However, the extent to which the algorithms by which social information are processed can be generalised to other types of processes, as discussed by Lockwood et al., (2020) seems to be more of a gray area. Personally, I feel that in this gray area might hide a decent amount of interesting questions to be explored in future science. For example, in my opinion the semi-recent proposal that the hippocampus might represent social relations in the same way as spatial ones is an interesting one, with myriads of possible implications in other types of information processing.