 The property ‘being the left side of my body’ depends existentially on the property ‘being the right side of my body’, even though the objects falling under each do not existentially depend on one another. This is due to the fact that one property could not exist without the other one, but the objects falling under them could. In the case of cause and effect we could therefore interpret Nāgārjuna as saying that the properties ‘being a cause’ and ‘being an effect’ depend existentially on one another, even though the existential dependence of objects falling under them is not symmetric: the effect depends existentially on the cause, but the cause does not need the effect for its existence.