When this two-day meeting was proposed, it was certainly not conceived
as a celebration, much less as a party. However, on reflection, this
might have been a wholly appropriate gesture because geostatistical
simulation came of age this year: it is now 21 years since it was first
proposed and implemented in the form of the turning bands method. The
impetus for the original development was the mining industry,
principally the problems encountered in mine planning and design based
on smoothed estimates which did not reflect the degree of variability
and detail present in the real, mined values. The sustained period of
development over recent years has been driven by hydrocarbon
applications. In addition to the original turning bands method there are
now at least six other established methods of geostatistical simulation.
Having reached adulthood, it is entirely appropriate that geostatistical
simulation should now be subjected to an intense period of reflection
and assessment. That we have now entered this period was evident in many
of the papers and much of the discussion at the Fontainebleau meeting.
Many questions were clearly articulated for the first time and, although
many ofthem were not unambiguously answered, their presentation at the
meeting and publication in this book will generate confirmatory studies
and further research.