...why not people?
I asked myself that question -- again -- today as I stood on what was supposed to be an express checkout line in the local supermarket this afternoon. I say "supposed to be" because, if I have this concept down right, the idea is to move people quickly and efficiently through the checkout and payment process, thus making their shopping experience a much more enjoyable and/or efficient one.
However, when you're stuck behind an 80-year-old mutant, things don't always work out as planned.