2. What are the benefits of MentalPlex search?

* Easy-to-use: Users no longer need to think in Boolean query terms or use quotes, linear thinking or logic. With MentalPlex, you just project a mental picture of what you want to find.

* Acts like your psychologist: Don't know what you want? MentalPlex can help. Instead of projecting a specific image, open your mind and let MentalPlex poke around. The search results can be very revealing about your innermost self. (Caution: open searching is best performed behind closed doors.)

* Works in all languages: Since MentalPlex works from mental images instead of words, language is not a problem. If your right brain conjures a different image than your left brain, try using your dominant hemisphere for ideal performance.

What are the challenges of operating so many pigeon clusters (PCs)?

Pigeons naturally operate in dense populations, as anyone holding a pack of peanuts in an urban plaza is aware. This compactability enables Google to pack enormous numbers of processors into small spaces, with rack after rack stacked up in our data coops.