Lapham’s Quarterly

In 1927 Russian psychologist Bluma Zeigarnik identified a phenomenon that came to be known as the Zeigarnik effect, which states that waiters are good at remembering particulars of a restaurant bill—until the bill is paid. “Unfinished tasks are remembered approx­imately twice as well as completed ones,” concluded Zeigarnik.

“Animals retain the memory of their experiences and have no need of mnemonic systems,” according to the third-century Roman writer Aelian. “A horse, on hearing the clash of curb chain and the clang of bit, and seeing chest plates and frontlets, begins to snort and makes his hoofs ring as he prances, and is in an ecstasy.”

Advocating in 1790 for the adoption of card catalogues, the German librarian Albrecht Christoph Kayser cited the “common mistake of employees that they believe they will live forever.” Workers “arrange their shops without regard for their successors, considering them well kept in their own memory, without written notes, thus making it impossible for those eventually taking their place, or at least making it infinitely more complicated for anyone to pick up the thread of those who have been called to meet their maker.”

A 2001 study in Science magazine found that matriarchal African elephants are essential to the well-being of elephant social groups because they possess social memories that enable them to recognize if outsiders are friendly to the herd. “Elephants can certainly build up a memory over the years and hold on to it,” said the study’s lead author.

In 1956 psychologist George Miller published a paper that claimed the average number of objects a typical human can hold in short-term memory is seven (plus or minus two). “What about the magical number seven?” he wrote. “What about the seven wonders of the world, the seven seas, the seven deadly sins, the seven daughters of Atlas in the Pleiades, the seven ages of man, the seven levels of hell, the seven primary colors, the seven notes of the musical scale, and the seven days of the week?”

“When Simonides or someone offered to teach him the art of memory,” Cicero noted in his De Finibus, the Athenian politician Themistocles “replied that he would prefer the art of forgetting. ‘For I remember,’ said he, ‘even things I do not wish to remember, but I cannot forget things I wish to forget.’ ”

According to film director Joe Swanberg, a significant number of people believe that an obscure 1985 film about mind control was not in fact real, and that they had dreamed the particulars of the Quebecois film. “The Peanut Butter Solution,” wrote Swanberg, “successfully convinced young viewers that they dreamed it rather than watched it.”

“In Turkish we have a special tense that allows us to distinguish hearsay from what we’ve seen with our own eyes,” wrote Orhan Pamuk in Istanbul: Memories and the City. “When we are relating dreams, fairy tales, or past events we could not have witnessed, we use this tense. It is a useful distinction to make as we ‘remember’ our earliest life experiences, our cradles, our baby carriages, our first steps, all as reported by our parents, stories to which we listen with the same rapt attention we might pay some brilliant tale of some other person.”

According to a biographer, Honoré de Balzac called out on his deathbed for Dr. Horace Bianchon, a fictional creation that appeared in thirty-one of his stories. “Send for Bianchon,” the novelist said to his attending physician.

“There is one thing at which I cannot sufficiently wonder,” wrote Pliny the Elder, “that of some trees, the very memory has perished, and even the names recorded by authors have passed out of knowledge.”