I have found both Dunedan and roachboy's posts to be very clear. And I concur with ubertuber that the exchange has been very informative and invigorating.
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Most people go through life dreading they'll have a traumatic experience. Freaks were born with their trauma. They've already passed their test in life. They're aristocrats. - Diane Arbus
PESSIMISM, n. A philosophy forced upon the convictions of the observer by the disheartening prevalence of the optimist with his scarecrow hope and his unsightly smile. - Ambrose Bierce
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