Let me take you back to scene of the "incident."
Here we have an aerial view of the interior restaurant layout. Like at every other Chip0tle, you enter the restaurant and go strait to the beginning of the food line. At position number 1 you give the first worker your meat and bean choice. You slide down the line as you watch their nimble hands prepare your delicious lunch until it is all wrapped up and cocooned inside it's silver protective sheath. At position number 2 you pay for your choice and move on.
At this particular Chip0tle, everyone then turns around and flows to position 3 where silverware, hot sauce and napkins can be procured. Each person then slides down to position 4, the soda machine. This is the particular locale of the frustrating occurrence.
After smoothly participating in the well-designed directional flow you leave and sit at your chosen table. We usually sit at the large round table indicated in the figure above as position 5.
As you can clearly see, the flow of traffic moves from right to left at position 4. This is the only thing that makes sense. The ONLY thing.
We need to take a closer look at the soda machine featured as the pivotal focus of position 4. Below is a schematic view of the soda machine looking face on.
As you can see the ice machine is the first device each person encounters. This is logical and makes sense with the flow of the entire experience. Then, each person moves down to fill their cup with their beverage of choice.
I don't know if you can tell, but both normal Coke and diet Coke have 2 spigots each.
Today, and almost every other time I've been to this particular establishment the person before me will get their ice and choose the FIRST diet coke spigot to fill their drink. This puts me in a very odd position. Do I get my ice, go around behind them to use the farther away, second spigot or do I wait until they are done using the closer spigot? What if they step back at the exact wrong moment while I am accommodating for their flow disruption (going behind) and I end up dropping my burrito and the goodness explodes out of it's tightly wrapped silver container? If I do decide to wait, should I then slide to the farther spigot so that the person behind me isn't in the same quandary? Ugh!
Why didn't they just take an extra step to the left so that we could both fill our drinks in parallel?
The world may never know.