Social Experiment 2: soda bottles

Now that we have delved into office supplies, let us turn our attention to soda bottles. Our restaurant doesn't do fountain drinks, we have 20 oz bottles. That being said, I have observed over the last month that many people do not finish their soda and yet, even tho they have a bottle with a lid, do not take the remainder with them. Now that I've made that observation I decided to do a more accurate in-depth study. Approximately 50% of guests do not finish their drink. Of that group, approximately 25-30% leave half a bottle or more. However, only about 4% of those guests actually think to take the remainder with them. A coworker of mine even had a guest leave behind an unopened bottle. My theory behind this is that since most restaurants use a draft fountain bringing soda home is not really an option. Thusly the average person is programmed to not think twice about leaving behind something they paid for. Further proving that theory is the trend that it is more often younger guests (with less dinning experience and less programming that seem to take the remaining beverage with them. Of course at the end of the day leaving behind 10oz of soda isn't a big deal, just something fun to think about.