Different mechanisms for keeping track of passing events (time) across the board, but also just as importantly, within species too, from individual to individual. It cannot be properly conceived without relativistic concepts, accounting for the medium, positions, and movements these signals are in.

RE: https://bsky.app/profile/did:plc:dzohep3wsek2yifca5eozwsv/post/3mhjwoatg6c2x