We give a short new proof of large N duality between the Chern-Simons invariants of the 3-sphere and the Gromov-Witten/Donaldson-Thomas invariants of the resolved conifold. Our strategy applies to more general situations. and it is to interpret the Gromov-Witten. the Donaldson-Thomas. https://parisnaturalfoodes.shop/product-category/immune-support/