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LA COMPENSATION DES BLOCS DE BANDES, DISCUSSION 67 
something which you never can get rid of, not 
even by improving the precision of your individ- 
ual observation. That is the point. That is the 
fundamental reason why we in Delft we realised 
the necessity of some block adjustment method, 
and whether you do it in one way or another, 
you must come to a unit, which is not a strip, but 
with a single model, two models or three or four 
models. That is all. That is the basic point of 
the necessity for block adjustment, because a 
strip triangulation is even worse and much worse 
than a normal ground traverse.