>>Why, because you don’t understand what they do?
I was a business analyst at my previous job. My core function was to gain a deep understanding of what the various people in an organization did, where the input for their work came from and where the output went, and why.
Here's an example that actually embodies an extremely common scenario:
I worked with a customer whose clients filled out and submitted online forms at the customer's website. They had a clerk who would, once per hour, print all the forms that had been submitted, then take that stack of paper and place it on an unoccupied desk in a room on the other side of the building. She would then walk back to her own desk and twiddle her thumbs for the remainder of the hour.
After a lot of interviews and digging, I found out the reason for this bizarre process: the unoccupied desk on the other side of the building used to be occupied by another clerk, whose job was to sort the forms based on their destination department, then walk to them to those departments. She would then come back to her desk and twiddle her thumbs for the remainder of the hour.
Here's the thing though: she had retired 5 years ago. The stacks of paper that were being piled on her now unoccupied desk were simply shredded regularly by a third clerk about once a week, and it took that clerk four hours to shred everything because she was required to keep an Excel spreadsheet of how many of each form was being shredded. That Excel spreadsheet was then saved to a network drive, where it wasn't accessed by any user, ever.
You might be thinking, "wow, that's pretty crazy, but stuff like that is probably pretty rare." You would be very wrong. I charted out insane processes like this for ten years. Every company has boatloads of them. Bullshit jobs are not only invented, but they are also retained long after they are made redundant and completely unnecessary.