Standard quantum mechanics treats unity as something to be decomposed — particles are localised, wavefunctions sum to one, probabilities add up. Pentagon Physics relocates quantum mechanics: unity is the baseline, not the result. The universe starts from a unified self-referential field. Separability — the ability to define distinct particles and positions — is what needs to be explained, not unity. This reframing dissolves the measurement problem (there is no collapse from unity to separability — there is only the threshold where unity differentiates) and clarifies the status of entanglement (not a mysterious long-range correlation — simply the persistence of unity before differentiation).