We used to have a guy that you just told him what you needed, and he would walk back and grab it off the shelf for you. With him gone it's just like in your picture. I got like
@dall one day when I asked for a Ford two-barrel carburetor kit. Which is the same kit for every Autolite/Motorcraft two barrel from 1958 to 1985 or so. I said, "pick one". He opened the book, and I dropped my finger on the first one I saw and said, "there ya go", and off he went and got it. Then says "you sure this will fit your car"? I said "I don't have a car, I have a truck". He says "well that can't work, can it"? I said "go back to your book and see if you can find a different one". He started flipping through that book and I left, not knowing if he appreciated the education I provided or not.