I stated that:
” I claimed that about 20% of all UFO cases remain unexplained in mundane terms”
No you didn’t. Your claim was: "research also shows us that there is a core of around 20% of cases where the information is reliable enough that eyewitness error is not a plausible explanation".
Regarding the Battelle Study (
http://www.ufocasebook.com/pdf/specialreport14.pdf):
”In the coding system, the choices provided for final identifications were based on ATIC s previous experience in analysis of the data. They had found that the majority of sightings could be classified as misinterpretations of common objects or natural phenomena. Accordingly, categories for objects most frequently present in the air were provided. Balloons, aircraft, astronomical bodies (such as meteors), birds, and clouds or dust were recognized as major categories. The less frequent, but common objects, such as kites, fireworks, flares, rockets, contrails, and meteorological phenomena like small tornadoes, were collected into a category called OTHER. A separate category for the uncommon natural phenomena associated with light reflections or refractions, such as mirages, sun dogs, inversion-layer images, and distortions caused by airborne ice, was established with the title of LIGHT PHENOMENON. Categories for INSUFFICIENT INFORMATION, PSYCHOLOGICAL MANIFESTATIONS, and UNKNOWN were provided for the sightings that could not be fitted into the preceding identifications.” (pp.11-12)
The categorisation of UNKNOWN was as follows:
This designation in the identification code was assigned to those reports of sightings wherein the description of the object and its maneuvers could not be fitted to the pattern of any known object or phenomenon.” (p.12)
I also stated that:
”While overall, 21.5% of all reports studied were classified as Unknown, it is interesting to note that of the 2199 reports examined, 213 (9.7%) were classified as having an “Excellent” reliability - and of those 71 (33.3%) were classified as “Unknown” (p.24).”
I therefore believe any fair reading of the above information (drawn and quoted as it was directly from the study) would enable the conclusion that
”…about 20% of all UFO cases remain unexplained in mundane terms”
The quotes you gave had only one part relevant to the claim you made which was "[...]of the 2199 reports examined, 213 (9.7%) were classified as having an 'Excellent' reliability[...]". And that doesn't back up your claim of 20%.
Indeed, as I later pointed out, that conclusion of “20%” actually
understates the true figure (but I find it prudent to be quite conservative when quoting research findings).
ETA: Nor does that 9.7% being classified as "excellent" in terms of reliability back up your claim that "the information is reliable enough that eyewitness error is not a plausible explanation".
Of the “Excellent” reliability cases, a full 33.3% of them were classified as “UNKNOWN” (p.24) That means that for 33% of those cases (as I stated)
"the information is reliable enough that eyewitness error is not a plausible explanation".
It is also notable that as the reliability of the cases decreased (from “Excellent” through “Good” and “Doubtful” to “Poor”), the proportion of “mundane explanation” cases rises until, for the lowest reliability cases (“Poor”), only 16.6% of cases were classified as “UNKNOWN”. This is an extremely interesting and significant finding and means that the more reliable the observer the greater the likelihood that a conclusion of “UNKNOWN” would result.
Dr. Allan J. Hynek (who for 20 years was the scientific consultant to the Blue Book project – from which the Battelle Study drew its data) also noted:
”The Battelle study further differentiated between military observers and civilians and found nearly 38 percent of the “Excellent” reports turned in by military observers were “Unknowns” while only 21 percent of the military reports rated “Poor” were “Unknowns”. The Hynek UFO Report (1978) Sphere Books Ltd. London. p.277)
This means of course that military observers are actually
more reliable than civilian observers. A point that the UFO debunkers try to hammer home every time a military UFO case is presented is that pilots etc are just as prone to observational error as civilian observers (perhaps more so as they have less reference points in the air), however,
the research indicates that quite the opposite is the case: military observers are demonstrably
more reliable than civilian observers!
Hynek also noted in reference to the Condon Report that
”Condon and others had indeed indicated that the unexplained sightings came invariably from poor observers” (p.276), yet the Battelle study had been published and available to Condon - and the Battelle study shows Condon to be incorrect in his conclusions here - the more reliable the observation, the greater the likelihood of a conclusion of "Unknown".