Trying  to weasel (pun intended) one's way out of taking some sort of
resposibility for looking  after the only planet we are likely to get
for a good long while, via evoking  the  theory that much of the earth's
biosphere is severely disrupted every hundred million years or so, is a
bit like saying  that we should all sit in front of these overgrown
pocket calculators 24hrs a day and turn our bodies into chair-potatoes,
because there is a  1-in-a-trillion chance that any of us could be
struck by a stray bullet the next time we step outside, so why not eat,
drink and be virtually merry, for tomorrow is a lost cause sooner or
later.  Don't kid yourself- quality beats quantity nearly every time,
and Hawaii is not likely to be swallowed by rogue plate tectonics any
time soon.
                                                                                                J. Ross Mayhew,                         (Your friendly neighbourhood
ecologically-friendly(most of the time, anyway!!) shell dealer.)