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Another difference with technical equipment is the developing 
during use, the learning and its effects on the anatomy of the eye, 
on the muscles and the movements, on the nerve connections, and on 
the endurance, 
Who will ever buy, or better pay for, an apparatus which does not 
function from the start on? An instrument which gradually will work 
better, faster, more precise, if tried long enough? Nobody, of course! 
But this is exactly whap happens with a living machinery. The eye and 
the brain need many years to build up a smooth functioning system with 
a good performance and a high degree of reliability. 
[Agranoff, in his study on 
"Memory and Protein Synthesis" 
(1967) gives a clear analogy: Our 
Studies of the goldfish have led us 
to view learning and memory as a 
form of biological development, 
One may think of the brain of an 
animal as being completely "wired" 
by heredity; all possible pathways 
are present, but not all are "soldered",] 
There is a continuous transition between the pure biological 
aspects and the lower corner of the scheme in fig. &, the part which 
we called for this purpose the Human Aspects of photo-interpretation. 
Which machine, for instance, can see colour-not measure energy as 
a function of wavelength, but perceive colours - and find them 
beautiful or ugly, actractive or cool? Which machine can take 
decisions ("Observation"), can reconsider the conolusions and decide 
"wrong or good", "correct or false"? 
^» 0 
[In computer applications, the machine selects on certain rules a 
small number of almost equally optimum possibilities out of a 
very large number, and it is said to be à wise policy to have a 
person to make the final decision. It is this human link which 
should safeguard against unknown factors, as, for instance, the 
closing the Suez-canal, which was not included in the 
programmes of the big oil companies! transportation computers, 
Computers seldomly decide; it is the programmer who does!] 
À most interesting faculty of human perception is the 
"Expectation", which essentially is availably before we see or could 
have seen a particular object. Where is the computer which can have 
an output before à signal entered through the input-gate? 
Or should one compare it with & sophisticated computer, selecting a 
specific programme out of its memory, after the first bits of 
information have arrived at the central place?