I've worked as a cashier many times in my life. I would not say that my perspective is privileged.

That said, I will continue to argue that it is antiquated. I'm talking about from the perspective of the business as well, mind you. The notion that we have to pay someone who stands at a register for X number of hours Y salary per hour is antiquated. There are so many other ways to handle that kind of trade for labor. Per person who goes through your line, for example, or just salary.

The problem is though that like it or not, the kind of people (this is a generality, mind you) who end up working a cash register for any length of time don't often have the same kind of mentality to hold the ability to provide high value to a business. If your biggest value is your ability to scan items, there isn't a position I can hire you for in my structure where I can't find simply far too many others with more experience and skill who will provide more value. It goes back to, can you push that boulder up the hill in 4 hours, or does it take you 8? I don't want to hire two people who it takes 8, I want to hire 1 that can do what both of you can do combined. The fact that you have to compete with that other person isn't unfair, it's just rational.

I used to work for an internet retailer where we had this thing happen that we called the 50/50/50 rule. Every year we would hire a bunch of warehouse workers. The company even invested in a bussing system that would drive these individuals to and from work every day and the pay was very fair for a warehouse role of this caliber. Everyone we interviewed had to take two tests. The first test was a VERY simple math and reading test. We're talking adding and subtracting of 2 digit numbers and basic multiplication and division and simple reading. The second was a more complex test but I'd have placed it around an 8th grade level, at most. Of those we interviewed, 50% failed the first test, of those that passed that, 50% failed the second, and of those who did not, 50% didn't show up to work the first day.

Keep in mind I took the tests and scored 100% on both and this was before I ever went to college.

Like it or not, there ARE calibers of people in this world. We want to think of everyone as equal, but they're just not. Everyone should be treated equally under the law, but that doesn't make them equal. If you are someone who cannot pass a simple math and reading test, and by simple I mean like 2nd grade stuff here, then I can't hire you - not for the simplest job we have a need for.

There's a firm point with what I'm saying here: Many businesses find that it makes more sense to pay hourly to a casher because if not, the casher is a lot more likely to not show up for work, not do their job when they do, and not do it correctly when they do their job than someone in my field. Same with the kinds of people who applied during my anecdotal warehouse example. Police were called every week due to fights and illicit drug use as well.

Again, there simply ARE calibers of people and there's nothing you're going to do about that. If that's not you and you work at a register all day, then I've confidence you won't be for long and maybe that antiquated way of trading for your labor will change, as it should.

I hate how the word "privileged" comes with a passive aggressive moral accusation. We all operate in the circumstances of our times.

Yes, basically all of these missives and thought experiments implicitly exclude retail while studiously avoiding admitting that this is the case. Retail stores need to be open a sufficient number of hours at the right time(s) of day to capture their potential customers. Unless you're not able to handle your checkout line or your restocks for whatever reason, "efficiency" doesn't really enter into it. Not in the sense of employee time, anyway. Maybe the world's best 7-11 clerk could check out a thousand customers in an hour but just because he can that doesn't mean it makes sense to close the store at 4:00 PM or only keep it open three days out of the week.

Edit: And to add to this before anyone pops out of the woodwork to state the obvious, this does not preclude the store from having more employees who work shorter shifts. In fact, this is often already the case not for any altruistic reason (to put it mildly) but rather to prevent anyone from achieving full time status such that the company would then owe them benefits.