Those are all subjective and ambiguous attributes.
No, that is one definition commonly used in a court of law in the United States, which applies to many situations. Regardless of your persistent denial, photographic analysis is a well-defined field practiced by a body of professionals according to scientifically derived techniques and methods. Proficiency in the field can be measured objectively by external standards.
Compare Jack White's experience and non-degrees with this other guy...
No. The question is not whether some other person is qualified. The question is whether Jack White is qualified.
Mr. BLAKEY. "Mr. Chairman, the committee has also asked Mr.
Jack D. White to appear as a witness today. Mr. White has studied
the backyard photographs for over 10 years.
That is not a test of proficiency. One may "study" in ignorance for any number of years. There is no evidence that White studied the backyard photo -- or any photo of any kind -- according to valid and proven techniques. In fact there is considerable evidence that he did not.
Further, the specific type of analysis White attempted to perform is a well-developed science. White himself disclaimed even knowledge of what that science was, much less proficiency in it. And since you're quoting from the source in which he made this disclaimer, I'll assume you're familiar with it.
Mr. White received a B.A. in journalism major, history minor
from the Texas Christian University in 1949.
This course of study does not include photographic analysis or any of the attendant sciences.
Currently, he is vice president of Witherspoon and Associates, Ft. Worth's largest advertising and public relations firm.
This does not engage him professionally in photographic analysis.
Mr. White has served with Witherspoon in various capacities for
over 25 years. He has done extensive work in all areas of reproduction, including photographic, mechanical, printing, and the graphic
arts."
None of this establishes White as having any proficiency in photographic analysis.
Thus, seems to me "expertise" is in the eye of the beholder.
No, expertise can be measured externally. That is the basis of professional licensure, for example. Sorry, you don't get to ask for the definition of an expert, then turn tail and say there's no such thing as an expert when the definition fails to include your desired pseudo-authority.
None of White's documented or claimed professional or academic activities qualifies him to perform the type of analysis he attempted on the backyard photo, which is the same type of analysis he attempted on the Apollo photos and many other photos pertaining to well-known conspiracy theories. White has never attempted any photographic analysis outside his conspiracy-theory activities, or been recognized by any professional, academic, or scientific organization as having any skill in that area.
Further, I have posted several examples of White's ineptitude, which you have entirely ignored.