Its an interesting tech study but don't forget the business side. I'm so incredibly old (LOL being sarcastic) that I remember high school yearbooks had school

Its an interesting tech study but don't forget the business side. I'm so incredibly old (LOL being sarcastic) that I remember high school yearbooks had school photographers for K-11 however seniors had to submit professional photographer pictures. You see it had only been made illegal a generation ago to submit a photo with every resume. In theory, photos were submitted to see if the applicant could clean up and dress in a professional stylish manner. It was made illegal in the 60s for very theoretical discrimination reasons. As if during an interview a manager wouldn't notice an applicant was black or a woman, but via the miracle of photography they could notice, LOL. Anyway culture and especially the ed establishment moves slowly so they were still preparing kids to submit photos with their resumes in the 80s despite it being illegal since the 60s. So seniors had to submit photos. Anyway the whole point of this anecdote is culture moves slow, and until "recently" if you wanted to graduate HS and get a job you needed a zillion copies of yourself from a professional studio. Also see Department of the Army standard "DA photo" for promotion packets, and the peculiar government requirements of passport photos. The days of 50% of the male population having served in the military are long gone with the WWII vets, the population as a whole, countrywide, is getting waaaay too poor to internationally travel thus no need for passports, etc.