Part of this is what I call MAGIC THINKING .
I'l start with 1973 going into the army and signing up for training I wanted , radio relay technician .
After being in bootcamp for some weeks , the paperwork came to a head - my physical & MOS = training .
I never new until this time , the physical showed I was lightly color blind red / green as I remember , so did not qualify and got out after bootcamp on breach of contract by army , because the school I signed for came before the physical .
Now I am a ham radio and find broken stuff & learn how to fix it , use it , or sell to get the next thing of interest .
I did discover that using several different types of lighting & magnification help bring out the correct colors , but I always use a meter to check values & group the parts on double sided tape on paper that I make notes on .
Now on the magic thinking part - in around the mid 80's , I started a new line of work , law enforcement mostly in northern & central California area , a bunch of departments had been infected with MAGIC THINKING , the normal process was all kinds of testing , and in this case physical agility testing , climbing walls , spring loaded dummies - to see if you could pull arms back from behind to be able to handcuff and other upper body strength tests .
Many dept. were eliminating tests that required upper body strength , in order to make it easier for women to qualify = MAGIC THINKING , some dept. totally eliminated the physical agility tests all together .
So there is no accounting for the stupidity / insanity of people , institutions etc.
If you can't do the job , then find a job you can do , SCREW THE MAGIC .
About the same time I read the front page of the San Francisco Chronicle that they were eliminating the test for pulling the ladder off the top of fire engine , so magical thinkers could apply - you better not live above the ground floor , even then your in danger , another test - carrying the 150 lb dummy - WHAT THE HELL