A ghost who has only a lay knowledge of the subject will be able to keep asking the same questions as the lay reader, and will therefore open up the potential readership of the book to a much wider audience.

Human experience depends on everything that can influence states of the human brain, ranging from changes in our genome to changes in the global economy.

Remember that politics, colonialism, imperialism and war also originate in the human brain.

In a way, science might be described as paranoid thinking applied to Nature: we are looking for natural conspiracies, for connections among apparently disparate data. Our objective is to abstract patterns from Nature (right-hemisphere thinking), but many proposed patterns do not in fact correspond to the
data. Thus all proposed patterns must be subjected to the sieve of critical analysis (left-hemisphere thinking).

The human brain is an incredible pattern-matching machine.

Surprisingly, the gigantic capacity of storage with the human brain is not utilized for a fraction of a percent of its capacity! None within the purview of human knowledge is known to be inactive than the human brain!