Mostly Harmless by Douglas Adams Read Free Book Online Page A

the small plastic panel on top of the robot which gave access to its logic circuits.

Now logic is a wonderful thing but it has, as the processes of evolution discovered, certain drawbacks.

Anything that thinks logically can be fooled by something else which thinks at least as logically as it does. The easiest way to fool a completely logical robot is to feed it the same stimulus sequence over and over again so it gets locked in a loop. This was best demonstrated by the famous Herring Sand- wich experiments conducted millennia ago at MISPWOSO (The MaxiMegalon Institute of Slowly and Painfully Working Out the Surprisingly Obvious).

A robot was programmed to believe that it liked herring sandwiches. This was actually the most difficult part of the whole experiment. Once the robot had been programmed to believe that it liked herring sandwiches, a herring sandwich was placed in front of it. Whereupon the robot thought to itself, `Ah! A herring sandwich! I like herring sandwiches.'

It would then bend over and scoop up the herring sandwich in its herring sandwich scoop, and then straighten up again. Unfortunately for the robot, it was fashioned in such a way that the action of straightening up caused the herring sandwich to slip straight back off its herring sandwich scoop and fall on to the floor in front of the robot. Whereupon the robot thought to itself, `Ah! A herring sandwich..., etc., and repeated the same action over and over and over again. The only thing that prevented the her- ring sandwich from getting bored with the whole damn business and crawling off in search of other ways of passing the time was that the herring sandwich, being just a bit of dead fish between a couple of slices of bread, was marginally less alert to what was going on than was the robot.

The scientists at the Institute thus discovered the driving force behind all change, development and innovation in life, which was this: herring sandwiches. They published a paper to this effect, which was widely criticised as being extremely stupid. They checked their figures and realised that what they had actually discovered was `boredom', or rather, the practical function of boredom. In a fever of excitement they then went on to discover other emotions, Like `irritability', `depression', `reluctance', `ickiness' and so on. The next big breakthrough came when they stopped using herring sandwiches, whereupon a whole welter of new emotions became suddenly available to them for study, such as `relief', `joy', `friskiness', `appetite', `satisfaction', and most important of all, the desire for `happiness'.

This was the biggest breakthrough of all.

Vast wodges of complex computer code governing robot behav- iour in all possible contingencies could be replaced very simply. All that robots needed was the capacity to be either bored or happy, and a few conditions that needed to be satisfied in order to bring those states about. They would then work the rest out for themselves.

The robot which Ford had got trapped under his towel was not, at the moment a happy robot. It was happy when it could move about. It was happy when it could see other things. It was particularly happy when it could see other things moving about, particularly if the other things were moving about doing things they shouldn't do because it could then, with considerable delight, report them.

Ford would soon fix that.

He squatted over the robot and held it between his knees. The towel was still covering all of its sensory mechanisms, but Ford had now got its logic circuits exposed. The robot was whirring grungily and pettishly, but it could only fidget, it couldn't actually move. Using the prising tool, Ford eased a small chip out from its socket. As soon as it came out, the robot went quiet and just sat there in a coma.

The chip Ford had taken out was the one which contained the instructions for all the conditions that had to be fulfilled in order for the robot to feel happy. The robot would be