Definition of the four elements

[Nickelii]

@Sunyo

It also includes the perception of the elements, whether through the physical senses or the mind. How one understands all this will also depend on one’s interpretation of the jhānas—and that is a debate which I don’t want to restart here.

This statement sounds unsubstantiated. The five elements are literally defined in MN 62, MN 140, AN 9.15 & elsewhere.