[monero-xmr]

It’s not an absolute thing. If you have someone staffing 6 of them to assist with errors and prevent theft, then it can speed up people trying to get in-and-out. If you have a giant cart of groceries, then someone who’s an expert at scanning and bagging will make everything go much faster.

People like speaking and projecting in absolutes, but the truth is mixed.

[Ekaros]

I agree, I usually buy single bigger bag worth of stuff at one time. So self-checkout monitored by one person is most of time option that feels speediest. As there really isn't line. Not that when I walk past normal tills they are too many people there.

The other chain here does lot worse with both checkout and tills. Somehow always having lines...

[AlexandrB]

It's not just expertise, but division of labor: while you unload the cart another person can be scanning in parallel. Plus checkout lines are optimized to make scanning fast - unlike most self-checkouts. If I have more than a handful of items I prefer the speed of a regular checkout.