Originally Posted by George B
Other than your intuition, do you have any evidence to support your speculation?
Other than your intuition, do you have any evidence to support your speculation?
If you mean have the policy makers said . . . we are trying to stall implementing persistent contrail mitigation to accomplish a particular goal . . . of course they have not . . . but if you look at the wealth of mitigation strategies over the years and the simple low cost methods to make aircrews aware of their contrail status . . . one is left with the question why has nothing practical been done . . . ?
The only thing guaranteed in life is deception. . . everything else is optional . . . George B
So, the answer is NO...you have no evidence per se...just a feeling.
Simply making aircrews "aware" of their contrails status isn't mitigation. Knowing that you are leaving contrail doesn't tell you how long it will persist nor is there anything you can necessarily do about it...It could be a deep pocket of saturated air such that altering your altitude slightly isn't enough...and descending to lower alt to avoid contrails costs more $$ in fuel.
Nothing practical has been done because global coordination of any sort is extremely difficult:
http://www.neurope.eu/blog/carbon-em...friendly-skies
I was hoping I wouldn't need to do this, but here it is. Some definitions for the word 'evidence': here's one, the number 1 spot in the Shorter Oxford English Dictionary (based on historical principles) - and it's not that short, let me tell you, it's on my lap and it weighs about 5 kilos, here's that meaning: evidence 1. The quality or condition of being evident. 2. Manifestation 3. That which makes evident; an indication, mark, trace 4. Example 5. Ground for belief...
Is there really 'no evidence' ?
Last edited by lee h oswald; March 9th, 2012 at 12:27 PM.
Indeed.
Absence of action is not a quality or condition of being evident nor a manifestation of a deliberate policy decision to allow contrails to persist.
The absence of action is evident in itself. How much more evident does it have to be before it constitutes evidence? You say, unequivocally, it is not 'a manifestation of a deliberate policy decision to allow contrails to persist.' Now show me the money. Where's your 'evidence' for this assertion? Is it based on a lack of evidence to the contrary? Therefore using the 'absence of something is not evidence' thing, only in reverse. Skeptopathy, think about it. What are you a party to that lets you say this with such conviction?
George B (March 9th, 2012)
My intuition.
Absence of action is not evident in itself of deliberate policy toward a the purposeful outcome of contrail persistence.
The second point is well taken though...here, I'll amend the statement:
Absence of action does not appear to me to be a manifestation of a deliberate policy decision to allow contrails to persist.
I do not see how a lack of coordination and consensus can then be construed as deliberate policy.
Conspiracism- think about it.
Last edited by SR1419; March 9th, 2012 at 01:35 PM.
So the answer is YES....there's loads of evidence...irrespective of 'feelings'
Huh? I buy potatoes grown in Egypt; garlic from Spain and Israel: bananas from African sources; lamb from New Zealand. What on earth are you talking about? Global coordination of all sorts is the norm - where have you been?!
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