PIT2 said:
There is a difference between an eyewitness account being 'sufficient proof' and it being suggestive of a particular phenomenom. As Ivan said:
Is there anywhere in science where purely qualatative eyewitness accounts are considered useful evidence? I don't think you need to go as far as what Ivan is saying: Eyewitness accounts do not need to be halucinations or lies to be unreliable. Indeed, I would say most of the more interesting UFO cases are neither halucinations nor lies. But by their nature, they must always be considered poor quality evidence.
One thing we see a lot in this forum is attempts to weigh the value of eyewitness evidence based on the qualifications of the observer. It
is necesary, but does such a thing exist elsewhere in science? Do we have to do the same thing for people operating a scale?
This is the sort of "starting assumption" people are referring to here in discussing whether scepticism is logical. It
is reasonable and rational, but it is
harsh and I think too often people see harsh as unfair when the reality of the subject matter is that you need a good low-transmittance filter to deal with the sheer volume of low-quality data out there. Consider the converse:
The fact that better data is not available is
not a logical reason to inflate the value of the data that is available. Looking for signal when there is only noise is a common tactic/fallacy in all areas of physics. For example, aether crackpots often cite the original Michelson-Morley experiment as not having a result of zero, when in reality, the non-zero result was within the margin for error of the experiment, thus supporting the prediction.