The question is seeking recommendations for books or publications that delve into the concept of "first principles" thinking, a problem-solving approach frequently advocated by Elon Musk. This method involves breaking down complex problems to their fundamental truths and using those foundational elements to devise innovative solutions. The aim is to understand this mode of thinking better by exploring resources that explain and elaborate on the principles behind this mindset.
It basically boils down to starting from the basics and working your way up from there, you do this to not get stuck in (social) conventions that might not make sense for the problem at hand but that probably made sense when those conventions were conceived.