5 Controversial Facts About Melvil Dewey and the Dewey Decimal System

iStock/TerryJ
iStock/TerryJ

Melvil Dewey, the inventor of the Dewey Decimal System, was born on December 10, 1851. Among other things, Dewey was a self-proclaimed reformer, so when working for the Amherst College library in the 1870s, he began to reclassify the facility’s books and how they were organized.

Though the system has gone through plenty of changes over the years, it’s still in wide use all over the world today and forever changed how libraries categorize their books. It has also caused a handful of controversies. In honor of Dewey Decimal Day, we dug into the organizational system—and its creator’s—dark side.

1. Melvil Dewey co-founded the American Library Association, but was forced out because of offensive behavior.

Melvil Dewey was an extremely problematic figure, even in his time. Though he co-founded the American Library Association (ALA), his often-offensive behavior—particularly toward women—didn’t make him a lot of friends.

In Irrepressible Reformer: A Biography of Melvil Dewey, author Wayne A. Wiegand described Dewey’s “persistent inability to control himself around women” as his “old nemesis.” In 1905, Dewey and several fellow ALA members took a cruise to Alaska following a successful ALA conference, with the purpose of discussing the organization’s future. Four women who were part of the trip ended up publicly accusing Dewey of sexual harassment—a rarity for the time. Within a year, Dewey was forced to step down from his involvement with the organization he helped to create.

2. Dewey required applicants to his School of Library Economy to submit photos.


A History of the Adirondacks, by Alfred Lee Donaldson (1921) // Public Domain, Wikimedia Commons

In 1887, Dewey founded the School of Library Economy at Columbia College, where 90 percent of his students were female. It was long rumored that in addition to basic information like name, age, and educational background, Dewey required that prospective female students also submit their bust sizes. While this rumor was eventually proven to be false, Dewey did ask women to submit photos, often noting that “You cannot polish a pumpkin.”

3. A Howard University librarian reorganized Dewey's original system because of its racial bias.

Dewey’s personal biases spilled over into his creation, too, and it has taken sincere effort and work to right those wrongs. In the 1930s, Howard University librarian Dorothy Porter helped create a new system to undo the racist way Dewey’s system treated black writers. As Smithsonian reported:

All of the libraries that Porter consulted for guidance relied on the Dewey Decimal Classification. “Now in [that] system, they had one number—326—that meant slavery, and they had one other number—325, as I recall it—that meant colonization,” she explained in her oral history. In many “white libraries,” she continued, “every book, whether it was a book of poems by James Weldon Johnson, who everyone knew was a black poet, went under 325. And that was stupid to me.”

In addition to charges of racism, the DDS has also been accused of being homophobic. Early editions of the system classified books on or regarding LGBT issues under Abnormal Psychology, Perversion, Derangement, as a Social Problem, or even as Medical Disorders.

4. Its 'religion' section is skewed heavily toward Christianity.

The DDS section on religion starts at 200, and no other religion besides Christianity is covered until 290. Given that there are more than 4000 religions in the world, saving a mere 10 numbers for their classification doesn’t leave a lot of room for thorough coverage or exploration. Though some changes have been made as new editions of the system have been introduced, the process of restructuring the entire 200s is a project that has yet to be undertaken.

5. Critics of the system would prefer libraries take the Barnes & Noble approach.

The Dewey Decimal System is the most used library classification system, with the Chicago Tribune estimating that more than 200,000 libraries in 135 countries use it. But it’s far from a perfect system. As such, many libraries are experimenting with other organizational techniques, and many are dropping the DDS altogether.

The main complaint that public libraries have is that the Dewey Decimal System does not make reading exciting, and that there are other ways of categorizing and organizing books that are more like that of general bookstores. By doing away with the numbers (which are hard to remember for general library patrons), some libraries are classifying books simply by category and organizing by author—a system they've begun referring to as "Dewey-lite."

9 Other Things That Happened on July 4

iStock/LPETTET
iStock/LPETTET

Of course we know that July 4 is Independence Day in the U.S. But lots of other things have happened on that date as well. Here are just a few of them:

1. Three former presidents died.

On July 4, 1826, John Adams and Thomas Jefferson—America's second and third presidents, respectively—both passed away. The two politicians had a love-hate relationship, and Adams's last words were supposedly, "Thomas Jefferson survives." (He didn't know that Jefferson had passed away a few hours earlier.) Exactly five years later, on July 4, 1831, fifth U.S. President James Monroe died in New York City.

2. Henry David Thoreau moved to Walden Pond.

On July 4, 1845, Henry David Thoreau began his two-year living experiment at Walden Pond, near Concord, Massachusetts.

3. Alice Liddell first heard the story of Alice in Wonderland.

On July 4, 1862, little Alice Liddell listened to a story told by Lewis Carroll during a boat trip on the Thames ... it would later become, of course, Alice's Adventures in Wonderland. It was published exactly three years later—on July 4, 1865.

4. Two famous advice columnists were born.

On July 4, 1918, twin sisters Esther Pauline and Pauline Esther Friedman were born. Today they're better known as Ann Landers and Dear Abby.

5. George Steinbrenner came into the world.

On July 4, 1930, future Yankees owner George Steinbrenner was born (and presumably fired the doctor immediately).

6. Lou Gehrig delivered his retirement speech.

On July 4, 1939, Lou Gehrig gave his famous retirement speech at Yankee Stadium after being diagnosed with ALS. He tells the crowd that he considers himself "the luckiest man on the face of the earth."

7. The Zodiac Killer killed for the first time. (As far as we know.)

On July 4, 1968, the Zodiac Killer murdered his first victims (that we know of) at Lake Herman Road in Benicia, California.

8. Koko was born.

On July 4, 1971, Koko, the sign-language gorilla, was born.

9. Bob Ross passed away.

On July 4, 1995, Bob Ross died, and all over the world, Happy Little Trees were a little less happy.

This list first ran in 2008 and was updated for 2019.

12 Facts About Diabetes Mellitus

iStock/mthipsorn
iStock/mthipsorn

Thirty million Americans—about 9 percent of the country's population—are living with diabetes mellitus, or simply diabetes. This chronic condition is characterized by sustained high blood sugar levels. In many patients, symptoms can be managed with insulin injections and lifestyle changes, but in others, the complications can be deadly. Here's what you need to know about diabetes mellitus.

1. There are three types of diabetes.

In healthy people, the pancreas produces enough of the hormone insulin to metabolize sugars into glucose and move the glucose into cells, where it's used for energy.

But people with type 2 diabetes—the most common form of the disease, accounting for about 95 percent of cases—either can't produce enough insulin to transport the sugars, or their cells have become insulin-resistant. The result is a buildup of glucose in the blood (a.k.a. high blood sugar or hyperglycemia). Type 2 diabetes typically develops in adults.

Type 1 diabetes, also known as juvenile diabetes, makes up the remaining 5 percent of chronic cases and most often develops in children and young adults. With this condition, the initial problem isn’t blood sugar levels, but insulin production: The pancreas can’t make enough insulin to process even normal amounts of glucose. The sugar builds up as a result, leading to dangerous concentrations in the bloodstream.

The third form, gestational diabetes, only afflicts pregnant people who weren’t diabetic before their pregnancy. The mother's blood glucose levels usually spike around the 24th week of pregnancy, but with a healthy diet, exercise, and insulin shots in some cases, diabetes symptoms usually can be managed. Blood sugar levels tend to return to normal in patients following their pregnancies.

2. The mellitus in diabetes mellitus means "honey sweet."

Around 3000 years ago, ancient Egyptians described a condition with diabetes-like symptoms, though it wasn't called diabetes yet. It took a few hundred years before the Greek physician Araetus of Cappodocia came up with the name diabetes based on the Greek word for "passing through" (as in passing a lot of urine, a common diabetes symptom). English doctor Thomas Willis tacked on the word mellitus, meaning "honey sweet," in 1675, building on previous physicians' observations that diabetic patients had sweet urine. Finally, in 1776, another English physician named Matthew Dobson confirmed that both the blood and urine of diabetes patients were made sweeter by high levels of glucose in their blood.

3. The cause of one type of diabetes is well understood; the other, not so much.

A person’s lifestyle is a key predictor of developing type 2 diabetes. Factors like being overweight or obese, consuming a high-calorie diet, smoking, and seldom exercising contribute to the risk. Foods and drinks that are high in sugar—soda, candy, ice cream, dessert— may contribute to hyperglycemia, but any food that’s high in calories, even if it's not sweet, can raise blood sugar levels.

In contrast to these well-established factors, medical experts aren’t entirely sure what causes type 1 diabetes. We do know that type 1 is an autoimmune disease that develops when the body attacks and damages insulin-producing cells in the pancreas. Some scientists think that environmental factors, like viruses, may trigger this immune response.

4. Family history also plays a role in diabetes risk.

If a parent or sibling has type 2 diabetes, you are predisposed to developing pre-diabetes and type 2 diabetes. Lifestyle habits explain some of these incidences, since family members may share similar diets and exercise habits. Genetics also play a role, but just because one close relative has diabetes does not mean you're destined to. Research conducted on identical twins, which share identical genes, showed that the pairs have discordant risk. Among twins in which one has type 1 diabetes, the other has only a 50 percent chance of developing it; for type 2, the risk for the second twin is 75 percent at most.

5. Racial minorities are at a higher risk for developing diabetes.

Many racial minority groups in the U.S. have a higher chance of developing type 2 diabetes. Black Americans, Latino Americans, Native Americans, Pacific Islanders, and some groups of Asian Americans are more likely to have pre-diabetes and type 2 diabetes than white Americans. This can be partly explained by the fact that some of these groups also have higher rates of obesity, which is one of the primary risk factors of type 2 diabetes. Socioeconomics may also play a role: One study shows that people with diabetes living in poverty are less likely to visit diabetes clinics and receive proper testing than their middle-income counterparts. According to another study, diabetic people without health insurance have higher blood sugar, blood pressure, and cholesterol rates than insured diabetics. Genetics, on the other hand, don’t appear to contribute to these trends.

6. Diabetes is one of the world's deadliest diseases.

With proper management, people with diabetes can live long, comfortable lives. But if the disease isn’t treated, it can have dire consequences. Diabetics make up the majority of people who develop chronic kidney disease, have adult-onset blindness, and need lower-limb amputations. In the most serious cases, diabetes leads to death. The condition is one of the deadliest diseases in the world, killing more people than breast cancer and AIDS combined.

7. Millions of Americans are pre-diabetic.

According to the CDC, 84 million adults living in the U.S. are pre-diabetic: Their blood sugar is higher than what’s considered safe, but hasn't yet reached diabetic level. In pre-diabetic patients, blood glucose levels after eight hours of fasting fall between 100 and 125 milligrams per deciliter, and diabetic levels are anything above that. People with pre-diabetes are not just at a greater risk for type 2 diabetes, but also for heart disease and stroke. Fortunately, people who are diagnosed with pre-diabetes can take steps to eat a healthier diet, increase physical activity, and test their blood glucose level several times a day to control the condition. In some cases, doctors will prescribe drugs like metformin that make the body more receptive to the insulin it produces.

8. After climbing for decades, rates of diabetes incidence are declining.

In the U.S., the rate of new diagnoses skyrocketed 382 percent between 1988 and 2014. Globally, 108 million people had diabetes in 1980, but by 2014 that number was 422 million.

But thanks to nationwide education and prevention efforts, the trend has reversed in the U.S., according to the CDC. Since peaking in 2009, the number of new diabetes cases in America has dropped by 35 percent. In that same timeframe, the number of people living with diagnosed diabetes in the U.S. has plateaued, suggesting people with the condition are living longer.

9. The first successful treatment for type 1 diabetes occurred in 1922.

Prior to the 20th century, type 1 diabetes was usually fatal. Diabetic ketoacidosis—a toxic buildup of chemicals called ketones, which arise when the body can no longer use glucose and instead breaks down other tissues for energy—killed most patients within a year or two of diagnosis. In searching for way to save children with juvenile (type 1) diabetes, Canadian physician Frederick Banting and medical student Charles Best built on the work of earlier researchers, who had demonstrated that removing the pancreas from a dog immediately caused diabetes symptoms in the animal. Banting and Best extracted insulin from dog pancreases in University of Toronto professor J.J.R. Macleod's lab. After injecting the insulin back into dogs whose pancreases had been removed, they realized the hormone regulated blood sugar levels. On January 11, 1922, they administered insulin to a human patient, and further refined the extract to reduce side effects. In 1923, Banting and Macleod received the Nobel Prize in Medicine for their work.

10. A pioneering physicist discovered the difference between type and and type 1 diabetes.

In the 1950s, physicist Rosalyn Yalow and her research partner Solomon Berson developed a method for measuring minute amounts of substances in blood. Inspired by Yalow's husband's struggle with diabetes, Yalow focused her research on insulin. Their "radioimmunoassay" technology revealed that some diabetes patients were still able to produce their own insulin, leading them to create two separate categories for the disease: “insulin-dependent” (type 1) and “non-insulin-dependent” (type 2). Prior to that discovery in 1959, there was no distinction between the two types. In 1977, Yalow won the 1977 Nobel Prize in Medicine for the radioimmunoassay, one of only 12 female Nobel laureates in medicine.

11. Making one insulin dose once required tons of pig parts.

Insulin is relatively easy to make today. Most of what's used in injections comes from a special non-disease-producing laboratory strain of E. coli bacteria that's been genetically modified to produce insulin, but that wasn't always the case. Until about 40 years ago, 2 tons of pig pancreases were required to produce just 8 ounces of pure insulin. The pig parts were typically recycled from pork farms.

12. A quarter of diabetes patients don’t know they have it.

The symptoms of type 2 diabetes can develop for years before patients think to ask their doctor about them. These include frequent urination, unexplained thirst, numbness in the extremities, dry skin, blurry vision, fatigue, and sores that are slow to heal—signs that may not be a cause for concern on their own, but together can indicate a more serious problem. Patients with type 1 diabetes may also experience nausea, vomiting, and stomach pain.

While serious, the symptoms of diabetes are sometimes easy to overlook. That’s why 25 percent of people with the illness, 7.2 million in the U.S., are undiagnosed. And that number doesn’t even cover the majority of people with pre-diabetes who aren’t aware they’re on their way to becoming diabetic.

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