morganster (imported) wrote: Fri Jan 07, 2011 11:10 pm
Ok, I will support my argument: The SETI project (Search for ExtraTerrestrial Intelligence) has been canceled for lack of results. "SETI has also occasionally been the target of criticism by those who suggest that it is a form of pseudoscience. In particular, critics allege that no observed phenomena suggest the existence of extraterrestrial intelligence, and furthermore that the assertion of the existence of extraterrestrial intelligence has no good Popperian criteria for falsifiability." (source:
http://www.nature.com/nature/journal/v4 ... 1316a.html)
Will that do? Now it's your turn. Provide some evidence that life exists elsewhere than the Earth please, I'm all ears. Mine is not a 'statement of faith'. My statement adheres to the scientific principle that any hypothesis (e.g. life exists elsewhere than the Earth) must be considered speculative at best until evidence for it is provided.
You are under no obligation to prove any number of speculative things, like the existence of God for example, but if you believe such things without evidence, it is you who are immersed in faith, not me.
And your statement that "
transward (imported) wrote: Fri Jan 07, 2011 1:04 am
The lack of evidence for the existence of alien lif
", is simply wrong. Absent evidence of 'A', not-'A' must be assumed until evidence of 'A' emerges or is discovered. For example, lack of evidence f
or 'A' having committed murder results in 'A's acquittal.
You perplex me. You seem incapable of logic, yet you throw in references to Karl Popper. If you can follow Popper's arguments then you know that your conclusions and reasoning are preposterous and are putting us on. And if you are incapable of logic, arguing is probably futile. But I will try one more time.
Your entire argument is a text book example of the Fallacy of the Excluded Middle or False Dilemma (
http://en.wikipedia.org/wiki/False_dilemma
A false dilemma (also called false dichotomy, the either-or fallacy, fallacy of false choice, black and white thinking or the fallacy of exhaustive hypotheses) is a type of logical fallacy that involves a situation in which only two alternatives are considered, when in fact there are additional options.
False dilemma can arise intentionally, when fallacy is used in an attempt to force a choice ("If you are not with us, you are against us.") But the fallacy can also arise simply by accidental omission of additional options rather than by deliberate deception (e.g., "I thought we were friends, but all my friends were at my apartment last night and you weren't there.")..... Similarly, when two alternatives are presented, they are often, though not always, two extreme points on some spectrum of possibilities. This can lend credence to the larger argument by giving the impression that the options are mutually exclusive, even though they need not be. Furthermore, the options in false dichotomies are typically presented as being collectively exhaustive, in which case the fallacy can be overcome, or at least weakened, by considering other possibilities, or perhaps by considering a whole spectrum of possibilities, as in fuzzy logic.
You propose only two alternatives. Either alien life is proved to exist or it is proved to not exist. Either A or not-A. But you ignore the alternatives. The analogy you
morganster (imported) wrote: Fri Jan 07, 2011 11:10 pm
cite in support of your position illustrates the problem.
Absent evidence of 'A', not-'A' must be assumed until evidence of 'A' emerges or is discovered. For example, lack of evidence f
or 'A' having committed murder results in 'A's acquittal. But an acquittal is not the same as being proved innocent. This is clearly illustrated in European courts where juries can return three possible verdicts, proved guilty, proved innocent and not proved. In the US the not guilty verdicts includes both the innocent and the not proved verdicts. But the lack of evidence of murder is not the same thing as evidence of innocence. If "Alien life exists" is "A" then "not-A" is not "Alien life does not exist." "Not-A" is the set combining "Alien life does not exist" plus "Alien life exists, but we have no evidence of it" Without experimental evidence we have absolutely no way of distinguishing between the two cases and your assertion that you have proved the first is ridiculous, and we are under no obligation to supply evidence of the existence of alien life to refute you. We need only show that y
rom the evidence you supply.
www.merriam-webster.com/dictionary/faith Definition
morganster (imported) wrote: Fri Jan 07, 2011 11:37 pm
of FAITH b (1) : firm belief in something for which there is no proof
You have stated the firm belief that life exists nowhere else in the universe. Y
ou have no proof one way or another. Your statement is based on faith. QED
I just thought of a compromise assertion that might cool this debate:
"Life exists nowhere else in the universe except here on Earth as far as we know."
Absent some new evidence one way or the other, I have little interest in the debate, beyond insisting that if you are going to argue that you be willing to follow the dictates of logic. I just find it amazing that you can make a statement about the conditions on the other side of the universe without the slightest evidence, without bothering to go to the far side of the universe to see if there is any life there, and call your opinion scientific.
Transward
Transward