For information on brain-computer interfaces, see Steven Kotler, 'Vision Quest’,

Wired Magazine,

September 2002, pp. 94-101, and Miguel Nicolelis and John Chapin, 'Controlling Robots with the Mind’,

Scientific American,

287(4) (October 2002): 46-53.

Some discussion of the computational power of the human brain is in Nick Bostrom’s 'How Long Before Superintelligence?’,

Linguistic and

5(1) (2006): 11-30. An updated version can be found at

http://www.nickbostrom.com/superintelligence.html .

The miraculous portrait of Dean Liddell (as well as a variety of similarly spontaneously appearing portraits) is described in chapter 18 of Charles Fort’s

অজানা পৃষ্ঠা