I think the point was that they were in Customer Service, not at a register. In the States, where I'm from and live, most CS desks work by having a line, one behind the other, and just the counter in front. You would need to turn left or right to exit, and I could see why someone would need to back up a little. Why she missed the lady putting her carrier down? Single file, plus focused on talking to the CS rep at hand. Putting the baby directly behind the little old lady was rude, and a trip was nigh on unavoidable.
Ooops, you are right. I just conflated "in line" and "counter" with a check-out counter.
Still seems odd the EL did not notice the mom putting _something_ down behind her (whether a baby or a heavy bag of dog food etc.) But like I said.. I don't like people "right" behind me so would be looking to see what was going on. I also try to give the person in front of me some privacy so am not right on their heels. I like that personal space bubble very much!
The mom was rude and why she wanted the baby on the floor instead of set over the seat/in the cart we will never know. *SMH* at someone who could have seriously hurt another person by being careless.
Heh. I space out easily, so I can see just backing up and thinking about other things, not really paying attention behind me, especially after talking with people. I don't claim I'm not at fault, but I certainly think other people should think of how accidents can be avoided with some simple actions... like not sticking the kid behind an older lady. That one's the mom's fault, I concur.

I read on another, art based forum I go to that Certain Program isn't real art. The forum was based on this program, and its mostly for hobbyists, or those doing bookcovers. You usually can download figures, clothes, poses, etc. from places that offer it on the web, like a 3D, virtual paper doll, and people may make their own, too. The poster asked because all her friends, photographers or graphics artists of other sorts, were convinced that Program wasn't really art the person created, because you use stock models for it, even though you could spend years, as I know, working on a project to get lighting and everything to fit just right. But yet it isn't art YOU own or created, because you're using stock pieces.

Also hear a similar argument for using provided loops and samples, prerecorded pieces, in music.
ETA: better SS story added.