Causal risk models of air transport - NLR-ATSI

“People in those days fancied, as people generally fancy when they catch sight for the first
time of a new problem, that it was far easier and simpler than was actually the case; they
did not know till experience taught them how painfully they would be compelled to advance
from step to step, and to unravel the intricate chain of causes which have gone to bring the
earth into its present shape; and still less how one principal result of the enquiry would
prove that the most interesting questions lay outside the reach of human knowledge”.
Leslie Stephen, The playground of Europe, Fredonia Books, Amsterdam, The Netherlands,
2004, reprint from the 1910 edition.
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