In a message dated 6/17/00 1:03:12 AM EST, sarima@friesen.net writes:
<< Even a series of small surface irregularities
can break up air flow enough to reduce heat transfer. And quite small
changes in a surface can cause significant changes in the appearance of the
surface.
Thus both factors are selectable almost immediately upon introduction of
surface structure. >>
The key word here is "almost"--not "immediately." The surface structure must
come first, and it cannot be because it >will< cause significant changes,
etc.