So I basically understand the C = ε0(A/d) formula. Larger area means there is room for more electrons, smaller d means larger E field, which pulls electrons onto the opposite plate more strongly. What's tripping me up is when dielectrics come into the picture. When a dielectric is inserted, the E field goes down, but the capacitance goes up. I feel like I get the reasons for each of these effects individually, but why does dropping the E field between the plates not reduce capacitance? Is it just cancelled out by the positive effect of the dielectric?