I have a bathtub filled with water. Sometimes I pour water into the tub. Other times I dip water out. The water comes from various sources – the faucet, bottled water from the store, rainwater, urination, etc. I also use the water for various purposes – mainly bathing, cleaning, and drinking.
But I like to account for my drinking water separately. I use a chicken-wire fence to mark off a section at the foot of the bathtub. Every time I buy bottled water from the store, I pour it into the drinking-water section. And every time I want to drink, I make sure to dip from the same section.
When I pour in more bottled water than I dip out for drinking, I add to my Drinking Water Trust Fund. If I drank more than I poured in from bottles, I would be depleting the Trust Fund – but that hasn’t happened yet. I’ve been running a drinking-water surplus for a long time now. I’ve also been running a non-drinking-water deficit – that is, I use more water for non-drinking purposes than I put in from non-bottled sources. But for some reason, the water level in the drinking-water section isn’t any higher than the water elsewhere in the tub.
I’ve been trying to figure out why, and I think I’ve figured it out. I think it might be because the fence is made of chicken-wire! So the water I pour into the drinking-water section could be mixing with the water in the rest of the tub – which is rather disturbing, since I’ve been urinating there.
In future years, I might need to drink more drinking-water than I’m putting in. In fact, I’m getting thirstier every day, drinking more and more water. And even though I’m still pouring in more bottled water than I’m drinking, for some reason the water level in the whole tub (including the drinking section) keeps on falling. Still, I am sanguine. You see, the non-drinking section of the tub owes water to the drinking section! In fact, I’ve been keeping track of how much. And when the day arrives when I start drinking more water than I pour in from bottles, I will simply dip water out of the non-drinking section and pour it into the drinking section. And then I will drink it. That way, I will satisfy all my drinking needs with the water saved up by the drinking section (in the form of IOU’s from the non-drinking section).
I only have just one tiny concern. If water from the non-drinking section is being used to pay off the drinking section (and then getting drunk), then whatever will I use to wash and clean?