Modern technology

Recent developments in more refined technology have fortunately given us a much better analogy: the hologram.

In this technique, an especially concentrated light or laser beam is split into two. One half of the ray is directed to the plate, while the other half is bounced off the image and then directed back to the other half of the ray. The special holographic plate records the millions of fragments into which the rays shatter when they collide. When dais plate is held up in front of laser beams directed at special angles towards it, the original image is recreated. Amazingly, it is not recreated as a flat picture on the plate, but is perfectly duplicated as a three-dimensional ghost object that hangs in space. If the object is looked at from above, below or the side, it is seen in exactly the same way as the original object would be seen.

Even more amazingly, if the original holographic plate is rotated through 90 degrees, as many as 90 images can be recorded on the same plate with no interference.

And to add still further to the extraordinary nature of this new development, if the plate is taken and smashed to smithereens with a hammer, each particle of the shattered plate will, when it is placed in front of the specially direct lasers, still produce the complete three-dimensional ghost.

The holograph thus becomes a far more reasonable model than the camera for the way in which our brain works, and begins to give us some idea of just how complex an organism it is that we carry about with us.

But even this extremely refined piece of technology falls far short of the unique capabilities of the brain. The holograph certainly approximates more closely the three-dimensional nature of our imaginations, but its storage capacity is puny compared to the millions of images that our brains can call up at an instant's notice, and randomly. The holograph is also static. It cannot perform any of the directional exercises of the kind described on pages 107 and 108 which the brain finds so easy and yet which must involve the most unimaginably intricate machinery. And even if the holograph were able to accomplish all this, it would not be able to do what our minds can: to see its own self, with eyes closed, performing the operations!

The above gives considerable cause for thought, and even our most advanced sciences have as yet made little progress in this most interesting area of current research.

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