In terms of the argument, Śāntarakṣita argues “that which is cause and effect is mere consciousness only. And whatever is causally established abides in consciousness.” ([MAK] 91, Dbu ma sa 56a) Therefore phenomena that appear to be real external objects like a blue-patch are not something that is distinct from the nature of the phenomenological experience of blue-patch, even so, as the material form experienced in dreams is not distinct from the dreaming experience ([MAV] 91 Dbu ma sa 79a).