Sure, every bit of research could lead to a discovery, but Mssrs. Warwick and Whalley will have been dead for hundreds of years at the pace they're going about to find out what causes cogntion.
The neurons of an arachnid have created a unitary thing in the back of its eyes that coordinates everything, sort of like that thing in the back of the eyes reading and making comprehensible these words I post at societyofrobots. What is causing that "thing in the back of your eyes" that the biologics of neurons have created? Warwick and Whalley will never know; they're comfortably playing with their toys, and are having too much fun to care.