Why would Kant choose to write a "Prolegomena" (a preliminary discourse) instead of a direct treatise, and what does this choice imply about the perceived state of philosophical understanding regarding metaphysics at his time?

Synthesized answer

Kant chose to write a "Prolegomena" as a preliminary discourse to address the perceived state of philosophical understanding regarding metaphysics at his time [1]. This choice implies that, in Kant's view, the understanding of metaphysics was not yet in a condition to be considered a science [1].

The title itself, "Prolegomena to Any Future Metaphysics That Will Be Able to Come Forward As Science," indicates that the current state of metaphysical inquiry was not scientific, and a preparatory work was needed before a true scientific metaphysics could be established [1]. The passages do not explicitly elaborate on *why* Kant felt this was the case, beyond the implication that it had not yet attained scientific status.

Synthesized from the book passages below. Chat with the book on Feynman for follow-up.