This would be mostly due to the new stores, and perhaps if business was good they needed to hire more people to provide better customer service levels?

As far as anyone being able to pour hot water through a filter with ground coffee, well it doesn't work that way at this level. Spot is high end quality coffee, barristas are actually in high demand, especially if they are good. Keep in mind a huge percentage of sales probably comes from specialty drinks and they take skill to create and serve up. People go through all kinds of training and require much experience to master the art of good coffee making.

If you look at even a Capuccino for example, they do that little art work at the top of your cup.....that's a thing of beauty for the coffee junkies......