About four years ago, I wrote about my "jugban" system, a simple container-kanban system I use to replenish the distilled water with which I clean my contact lenses each morning.
This evening, I stopped by the local grocery store to refill the recently-emptied jug in two-jug system. I put my money in the water dispensing machine and it fed a gallon into my jug.
Well, almost a gallon.
Well, actually, only about 90% of a gallon.
I've used this same machine for a couple of years. Yet, over the past six months, I find that I gradually get a little less than what I got the previous time. To the point now it is quite noticeable. The price has stayed the same. But is this just a drift in the controls in the machine? Or is the machine operator trying to improve his/her margin by dialing back the volume? The machine stated it had been serviced just a week ago. But did anyone check the calibration??
The water is not a big deal. But the simple drift, the simple loss of value made me wonder if the owner was also cutting corners on the filtration system or the reverse osmosis membrane.
What I could see (volume of water) made me wonder about what I couldn't see (microscopic quality of water).
Am I doing any of the same things??
Made me wonder. I hope it makes you wonder as well.
Keep on learning.