The title "Dream Logic, Software Minds, and the Poetry of Human Thought" gave a hint at what to expect. He went deep into his rather personal understanding of intelligence and consciousness.
Gelernter attempted a definition of 'thinking' (as opposed to the simulation of thinking) by deep introspection and analysis of his thought-processes. The result was a rather romantic, very anthropocentric praise of creativity, dreaming and intuition. Something tightly connected to feelings, emotion and unpredictability - a collection of elements a computer does arguably not have. A thinking computer, he inferred, should 'know' or 'feel' that he is thinking - thereby connecting thinking to consciousness.
But is this the right approach?
David Gelernter rejects anything that smells like solipsism. "if I see an animal with a head and eyes, I simply assume that what is going on in my head is also going on in it's head", he states in an interview with Berlin's "Der Tagesspiegel". His proof is: common sense. Although this might be satisfactory for a contemporary proponent of a romantic universal poetry, we actually do lack the ultimate test for consciousness and always end up with cozy attributes like feelings, emotions, awareness.
(see also: Der Tagesspiegel "Selbstbewußtsein ist ein Fluch", 27.6.2010)