Zombie Metric Reform

by The Metric Maven

In recent months, numerous media stories have discussed a market phenomenon called shrinkflation. National Public Radio (NPR) had a segment called Shrinkflation: Inflation’s Sneaky Cousin. Edgar Dworsky, a long-time consumer advocate, who had been an Assistant Attorney General in Massachusetts, has been tracking shrinkflation on his website. (And, of course, there’s a subreddit for shrinkflation). Edgar noted that a grocery store had replaced all the old General Mills cereal boxes with newer ones. He found some of the earlier boxes on an end display, and selected an old box of Cocoa Puffs. He returned to the main aisle, and put the old box next to the new one. General Mills had downsized the contents of their “Family Sized” box from 547 grams to 513 grams. Edgar took both boxes to the price scanner, and they both scanned the same price. This is very similar to real fraud.

Shrinkflation is where a company reduces the amount of contents in a box, and charges the same price—or even more. NPR’s Planet Money seems to be reporting this problem in a farcical tone (after NPR had injected two commercials). The “reporters” said that inflation is “old news” and skrinkflation is “brand new.” Edgar Dworsky has catalogued dozens of examples of shrinkflation over the years, including Maxwell House Coffee, Tropicana Orange Juice, Tuna Cans, Peanut Butter Jars….etc.

Dworsky diagnoses why this tactic works:

Because consumers are not net weight conscious, they’re price conscious but not net weight conscious. It is a sneaky way to pass on a price increase.

The presenters point out that if human beings followed the classical economic assumption, that they are rational consumers, then this should not be a successful tactic.

Planet Money reached out to General Mills for an explanation. Here is GM’s reply:

The change is all about creating consistency and standardization across the cereal products. [This allows] much more efficient truck loading, leading to fewer trucks on the road, and fewer gallons of fuel used, which is important in both reducing global emissions as well as offsetting increased cost associated with inflation.

As Dr Sunshine used to say, “I have two words to describe this: bull and shit.” Well, its not much of a standard if the amount can be changed in a capricious manner. The consistency is only in making uniform stealth changes. Oh yes, and if you buy this line of BS, then you will also believe General Mills is saving the planet one reduced sized quantity at a time.

Edgar Dworksky does not. He points out that you will run out of cereal sooner, and go to the supermarket sooner than expected, to replenish your Cocoa Puffs, and use more cardboard. Planet Money’s view is that hey,

…to be fair to General Mills, like a lot of companies these days they are dealing with increased business costs, you know higher gas, higher cost of grain, and shrinkflation is their way of dealing with it.

Spoken like a truly fair man, who accepts corporate humbug, as long as its in the open, like a magical illusion that fools everyone—so no one is hurt. Thank you for setting us straight propagandist Greg Rosalsky, who continues to chuckle as he moves along in jovial dialog with Stacey Vanek Smith. This not an intellectual fraud, it’s just business. The consumers don’t realize they’re being taken—and that’s ok today—and fun to talk about.

So what does all this have to do with metric reform? Well here is a quotation from Metrication in Australia:

In hindsight, the early conversion of quantity statements on packaged goods and changes in package sizes had an insignificant impact on public education due largely to the universal existence of the supermarket method of marketing, in which packages were selected by the customer by visual size rather than by quantity name in either imperial or metric.

The US Metric Association, and Elizabeth Benham at NIST, are apparently convinced that if we finally allowed all 50 states to present metric labeling on products, suddenly consumers would embrace an understanding of metric values. This idea has been discussed over and over. Clearly, business understands that people are often not only innumerate, but worse, substitute perception for quantification. It is a belief in the existence of a rational “classical economics” consumer, who will then “punish the market” into relenting, that is at the heart of this flawed notion. During their metric switch-over, Australians learned that metric labeling in supermarkets, as an educational tool, was a fiction. Even with overwhelming practical evidence, as shown by the implementation of shrinkflation across essentially all consumer goods, will these metric advocates rethink and redirect their efforts? This view is a zombie idea that entrances and then eats the brains of some metric advocates. No matter how many times I point this out, the zombie idea arises again, as a parasitic red herring that wastes people’s time and intellectual effort. Please, put salt in this zombie idea’s mouth, and sew it shut.


If you liked this essay and wish to support the work of The Metric Maven, please visit his Patreon Page and contribute. Also purchase his books about the metric system:

The first book is titled: Our Crumbling Invisible Infrastructure. It is a succinct set of essays  that explain why the absence of the metric system in the US is detrimental to our personal heath and our economy. These essays are separately available for free on my website,  but the book has them all in one place in print. The book may be purchased from Amazon here.


The second book is titled The Dimensions of the Cosmos. It takes the metric prefixes from yotta to Yocto and uses each metric prefix to describe a metric world. The book has a considerable number of color images to compliment the prose. It has been receiving good reviews. I think would be a great reference for US science teachers. It has a considerable number of scientific factoids and anecdotes that I believe would be of considerable educational use. It is available from Amazon here.


The third book is called Death By A Thousand Cuts, A Secret History of the Metric System in The United States. This monograph explains how we have been unable to legally deal with weights and measures in the United States from George Washington, to our current day. This book is also available on Amazon here.

Furlongs per Fortnight

By The Metric Maven

At the first university I attended, it was assigned as a “joke exercise” to compute speeds in Furlongs/Fortnight. I’m not sure what the lesson was supposed to be in this case. It was clear Furlongs per Fornight was an absurd use of units, but was it because they were not metric?—-or because they are an “inappropriate” use of medieval units. My favorite reference book, Measure for Measure has a single conversion factor entry: Furlong/Fortnight -> miles/hour [Campbell Factor] 0.00 372, and thus far I have not discovered who Campbell might be, or have been. So assuming I’ve converted correctly 1 Furlong/Fortnight is 166.31 micrometers/second or about 10 mm per minute and 600 mm per hour. For those who want to add more absurdity, and for those who are just fine with US Customary, there is the FFF system, which uses the Furlong, Firkin and Fortnight as its base units.

Of course, this is just a contrived use of units that is clearly absurd right? Clearly, one would never encounter an everyday computation this absurd. Well, then you underestimate the absurdity of our “customary units.” I often look to see what search terms are used by visitors to The Metric Maven website, and the current list looked rather prosaic, until I hit the sixth entry. It reads: “How many tablespoons are in a quarter cup?” My mind lurched to a halt taking this in. In one question we find so many adverse aspects of the current non-system of measurement it requires elaboration.

First we address the tablespoon issue. Now I hope the person asking is sure it is a tablespoon and not a teaspoon. As I’ve addressed in the past, the confusion of teaspoons and tablespoons is a perennial problem in US kitchens. It also has the downside that it has the potential to kill people. Assuming the inquisitor wants tablespoons, we might just quickly convert it to metric in milliliters. A tablespoon is 14.8 mL which I will round to 15 mL for our purposes.

We next encounter a fraction to dilute the volume of the cup for reasons which are not particularly apparent. It’s quite possible, that the person involved needs 1/4 cup of water for say a taco mix recipe or something, but has only teaspoons and tablespoons in their post-high school flat, and no US measuring cups. Well, we want a quarter cup of liquid, but only have a tablespoon. So a cup converted to metric is 236.6 mL, and we will divide this by four to obtain 59.1 mL which we will round to 60 mL. I might hear some objecting to this, but if the recipe was born of precision, it would have been in metric in the first place.

So now we have a teaspoon is 15 mL and 1/4 cup is 60 mL, we use these integer values to see that wow!–it’s 4 tablespoons in a 1/4 cup! What an interesting coincidence, but also, yeah, a complete coincidence. There is no way that these medieval units would have allowed one to readily realize this fact using them exclusively.

Now let’s look at the same problem from a metric perspective. We need 60 mL of water, milk, olive oil, whatever. Well, we can find a 15 mL measuring spoon and use four of them, or we can find a measuring cup and fill to the 50 mL graduation, then estimate another 10 mL. In the case of water, you could use a scale to measure 60 grams of water which is 60 mL using any vessel after zeroing the scale. It seems like one has a lot of options with a rational measurement system. But why bother when you can just use a search engine to find out the answer? The same type of solution was offered in the early 20th century by Fredrick Halsey, author of The Metric Fallacy. The technical device he offered up that would make the metric system unnecessary was the slide rule.

Technical innovations will not eliminate poor and non-intuitive methods of measurement expression. For instance, another question in the list of search key phrases is “how to use 1/8 inch measurement on yardstick.” Well, I have written about the absurdities of yardsticks in my essay Stickin’ it to Yardsticks. US residents might find it absurd that a person doesn’t recall common denominators, and such. What is absurd is making US residents use fractions on measuring rules at all. If they had a millimeter-only meter-stick there would be no need for fractions, or decimals. The person involved would not need to look on the internet, only understand integer addition and subtraction, and there are plenty of calculators available for that.

Thank heavens we still don’t use Roman numerals when the rest of the world uses Hindu-Arabic ones with decimals, we might rationalize using them in the age of the internet.


Tim Hunkin, a designer and maker from the UK has released his first video about The Secret Life of Components. He discusses chains, and as you will see, uses nothing but millimetres, including a mm-only ruler. He threw out all his quarter-inch US chains as he found the use of “imperial” too confusing. Note that he uses the word mil for millimetre, as is common with British engineers. In the US, the mil is a feral unit. Of course, we also use a pre-metric measurement unit called the chain to build roads in the US. I’ve written about it here.


If you liked this essay and wish to support the work of The Metric Maven, please visit his Patreon Page and contribute. Also purchase his books about the metric system:

The first book is titled: Our Crumbling Invisible Infrastructure. It is a succinct set of essays  that explain why the absence of the metric system in the US is detrimental to our personal heath and our economy. These essays are separately available for free on my website,  but the book has them all in one place in print. The book may be purchased from Amazon here.

The second book is titled The Dimensions of the Cosmos. It takes the metric prefixes from yotta to Yocto and uses each metric prefix to describe a metric world. The book has a considerable number of color images to compliment the prose. It has been receiving good reviews. I think would be a great reference for US science teachers. It has a considerable number of scientific factoids and anecdotes that I believe would be of considerable educational use. It is available from Amazon here.

The third book is called Death By A Thousand Cuts, A Secret History of the Metric System in The United States. This monograph explains how we have been unable to legally deal with weights and measures in the United States from George Washington, to our current day. This book is also available on Amazon here.