The most undervalued skill? Lateral thinking.

Our society mostly emphasizes developing logical, procedural thinking skills, but this isn't the only way to come up with great ideas. Forgetting to develop our lateral thinking skills may mean missing out on unexpected innovations.

Lateral thinking
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  • Lateral thinking is a way of approaching problems. It deliberately forgoes obvious approaches in favor of oblique or unexpected ones.
  • Deliberately ignoring perfectly good but straightforward solutions enables us to find hidden innovations we would otherwise miss.
  • Edward de Bono, who developed the concept of lateral thinking, lays out 4 specific lateral thinking techniques: awareness, random stimulation, alternatives, and alteration.

Here's a puzzle: A man walks into a bar and asks the bartender for a glass of water, who instead pulls out a gun, cocks it, and points it at the man. The man thanks the bartender and walks out. Why did the man thank the bartender?

There's no way to arrive at the answer (which appears at the end* of this article) without asking questions, testing the different elements of the story to see what missing information hasn't been provided. It's an example of a lateral thinking puzzle, a type of puzzle that requires creative, sometimes oblique thinking to arrive at the answer. In essence, lateral thinking is a method of approaching a problem by deliberately forgoing obvious methods of reasoning. It requires one to consider a given issue from unlikely angles, uncovering innovative solutions as a result.

Traditional thinking is vertical, moving step-by-step to a logical conclusion based off of the available data. Lateral thinking, however, is horizontal, putting the emphasis on generating many ideas while de-emphasizing the details of how those ideas could be implemented. Both vertical and lateral thinking are complementary: Without lateral thinking, vertical thinking would be too narrow-minded; without vertical thinking, lateral thinking would produce many possible solutions but no plans to implement them.

Despite their complementary nature, our society really values and focuses on improving vertical thinking. We believe that adequate training on specific techniques and systems will produce a talented engineer, lawyer, or doctor. But when it comes to professions that rely on creative, generative, lateral skills, we tend to assume that only those born with innate talent can excel in them. Even when it comes to the more vertically minded professions like engineering, creativity is seen as a desirable bonus that great engineers are born with.

Two stages of thinking

Psychologist Edward de Bono, who developed the concept of lateral thinking, argued that the brain thinks in two stages: The first is a perceiving stage, where the brain chooses to frame its environment in a certain way, identifying a particular pattern. The second stage uses that pattern, that particular way of looking at the environment, and builds upon it to reach a conclusion. No matter how effective we are at the vertical thinking of the second stage, better vertical thinking can never correct errors that have arisen in the first stage. In order to more accurately perceive patterns in our environment, we have to develop our lateral thinking skills.

In the video below, author David Epstein illustrates this principal through the case of Japanese repairman Gunpei Yokoi. Yokoi wasn't a particularly gifted engineer, but he perceived his environment in a way that his more talented and specialized peers were not able to. Because they had specialized so much, these more traditionally talented engineers could only frame their environment in terms of the specific technologies they specialized in. Yokoi, on the other hand, saw how various older — and therefore overlooked — pieces of technology could work together. The result was the Nintendo Game Boy.

Lateral thinking: The reason you’ve heard of Nintendo and Marvel

Learning to think laterally is, almost by definition, counterintuitive. Fortunately, de Bono developed some practical techniques for developing this overlooked capability. In his paper, "Information Processing and New Ideas — Lateral and Vertical Thinking," de Bono described four such techniques. Here they are:

  1. Awareness: Being aware of the way the brain processes information is the first step to improving the lateral thinking process. It's important to recognize the brain's tendency to rely on established patterns of thinking before starting to work on a new problem.
  2. Random stimulation: Often when we're trying to think about some issue, we shut out all outside stimuli so we can focus. However, allowing unplanned, outside stimuli can disrupt our reliance on imperfect frameworks. Paying attention to randomness can propel our thinking to new insights.
  3. Alternatives: de Bono argued that even if there is an apparently suitable solution to a problem, it can be useful to set it aside and deliberately consider alternative approaches, regardless of how ridiculous they might seem. Doing so will help you to consider a problem from all possible angles.
  4. Alteration: This technique consists of the deliberate alteration of available options, like doing the opposite of an implied direction or reversing any relationship between elements of the problem. This can include denying elements that are taken for granted, breaking large patterns down into tiny fragments, or translating a relationship to an analogy and then translating it back again just to see what changed. Arbitrarily altering elements of the problem space can produce novel tools to build a solution with.

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*The man has the hiccups and was hoping to cure it with a glass of water. Seeing this, the bartender decided to scare the man to cure his hiccups. Realizing he no longer had the hiccups, the man thanked the bartender and left.

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Inventions with revolutionary potential made by a mysterious aerospace engineer for the U.S. Navy come to light.

U.S. Navy ships

Credit: Getty Images
Surprising Science
  • U.S. Navy holds patents for enigmatic inventions by aerospace engineer Dr. Salvatore Pais.
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7 most notorious and excessive Roman Emperors

These Roman Emperors were infamous for their debauchery and cruelty.

Nero's Torches. A group of early Christian martyrs about to be burned alive during the reign of emperor Nero in 64 AD.

1876. Painted by Henryk Siemiradzki.
Politics & Current Affairs
  • Roman Emperors were known for their excesses and violent behavior.
  • From Caligula to Elagabalus, the emperors exercised total power in the service of their often-strange desires.
  • Most of these emperors met violent ends themselves.

We rightfully complain about many of our politicians and leaders today, but historically speaking, humanity has seen much worse. Arguably no set of rulers has been as debauched, ingenious in their cruelty, and prone to excess as the Roman Emperors.

While this list is certainly not exhaustive, here are seven Roman rulers who were perhaps the worst of the worst in what was one of the largest empires that ever existed, lasting for over a thousand years.

1. Caligula

Officially known as Gaius (Gaius Caesar Augustus Germanicus), Caligula was the third Roman Emperor, ruling from 37 to 41 AD. He acquired the nickname "Caligula" (meaning "little [soldier's] boot") from his father's soldiers during a campaign.

While recognized for some positive measures in the early days of his rule, he became famous throughout the ages as an absolutely insane emperor, who killed anyone when it pleased him, spent exorbitantly, was obsessed with perverse sex, and proclaimed himself to be a living god.

Caligula gives his horse Incitatus a drink during a banquet. Credit: An engraving by Persichini from a drawing by Pinelli, from "The History of the Roman Emperors" from Augustus to Constantine, by Jean Baptiste Louis Crevier. 1836.

Among his litany of misdeeds, according to the accounts of Caligula's contemporaries Philo of Alexandria and Seneca the Younger, he slept with whomever he wanted, brazenly taking other men's wives (even on their wedding nights) and publicly talking about it.

He also had an insatiable blood thirst, killing for mere amusement. Once, as reports historian Suetonius, when the bridge across the sea at Puteoli was being blessed, he had a number of spectators who were there to inspect it thrown off into the water. When some tried to cling to the ships' rudders, Caligula had them dislodged with hooks and oars so they would drown. On another occasion, he got so bored that he had his guards throw a whole section of the audience into the arena during the intermission so they would be eaten by wild beasts. He also allegedly executed two consuls who forgot his birthday.

Suetonius relayed further atrocities of the mad emperor's character, writing that Caligula "frequently had trials by torture held in his presence while he was eating or otherwise enjoying himself; and kept an expert headsman in readiness to decapitate the prisoners brought in from gaol." One particular form of torture associated with Caligula involved having people sawed in half.

He caused mass starvation and purposefully wasted money and resources, like making his troops stage fake battles just for theater. If that wasn't enough, he turned his palace into a brothel and was accused of incest with his sisters, Agrippina the Younger, Drusilla, and Livilla, whom he also prostituted to other men. Perhaps most famously, he was planning to appoint his favorite horse Incitatus a consul and went as far as making the horse into a priest.

In early 41 AD, Caligula was assassinated by a conspiracy of Praetorian Guard officers, senators, and other members of the court.

2. Nero

Fully named Nero Claudius Caesar, Nero ruled from 54 to 68 AD and was arguably an even worse madman than his uncle Caligula. He had his step-brother Britannicus killed, his wife Octavia executed, and his mother Agrippina stabbed and murdered. He personally kicked to death his lover Poppeaea while she was pregnant with his child — a horrific action the Roman historian Tacitus depicted as "a casual outburst of rage."

He spent exorbitantly and built a 100-foot-tall bronze statue of himself called the Colossus Neronis.

He is also remembered for being strangely obsessed with music. He sang and played the lyre, although it's not likely he really fiddled as Rome burned in what is a popular myth about this crazed tyrant. As misplaced retribution for the fire which burned down a sizable portion of Rome in the year 64, he executed scores of early Christians, some of them outfitted in animal skins and brutalized by dogs, with others burned at the stake.

He died by suicide.

Roman Emperor Nero in the burning ruins of Rome. July 64 AD.Credit: From an original painting by S.J. Ferris. (Photo by Kean Collection / Getty Images)

3. Commodus

Like some of his counterparts, Commodus (a.k.a. Lucius Aelius Aurelius Commodus) thought he was a god — in his case, a reincarnation of the Greek demigod Hercules. Ruling from 176 to 192 AD, he was also known for his debauched ways and strange stunts that seemed designed to affirm his divine status. Numerous statues around the empire showed him as Hercules, a warrior who fought both men and beasts. He fought hundreds of exotic animals in an arena like a gladiator, confusing and terrifying his subjects. Once, he killed 100 lions in a single day.

Emperor Commodus (Joaquin Phoenix) questions the loyalty of his sister Lucilla (Connie Nielsen) In Dreamworks Pictures' and Universal Pictures' Oscar-winning drama "Gladiator," directed by Ridley Scott.Credit: Photo By Getty Images

The burning desire to kill living creatures as a gladiator for the New Year's Day celebrations in 193 AD brought about his demise. After Commodus shot hundreds of animals with arrows and javelins every morning as part of the Plebeian Games leading up to New Year's, his fitness coach (aptly named Narcissus), choked the emperor to death in his bath.

4. Elagabalus

Officially named Marcus Aurelius Antoninus II, Elagabalus's nickname comes from his priesthood in the cult of the Syrian god Elagabal. Ruling as emperor from 218 to 222 AD, he was so devoted to the cult, which he tried to spread in Rome, that he had himself circumcised to prove his dedication. He further offended the religious sensitivities of his compatriots by essentially replacing the main Roman god Jupiter with Elagabal as the chief deity. In another nod to his convictions, he installed on Palatine Hill a cone-like fetish made of black stone as a symbol of the Syrian sun god Sol Invictus Elagabalus.

His sexual proclivities were also not well received at the time. He was likely transgender (wearing makeup and wigs), had five marriages, and was quite open about his male lovers. According to the Roman historian (and the emperor's contemporary) Cassius Dio, Elagabalus prostituted himself in brothels and taverns and was one of the first historical figures on record to be looking for sex reassignment surgery.

He was eventually murdered in 222 in an assassination plot engineered by his own grandmother Julia Maesa.

5. Vitellius

Emperor for just eight months, from April 19th to December 20th of the year 69 AD, Vitellius made some key administrative contributions to the empire but is ultimately remembered as a cruel glutton. He was described by Suetonius as overly fond of eating and drinking, to the point where he would eat at banquets four times a day while sending out the Roman navy to get him rare foods. He also had little social grace, inviting himself over to the houses of different noblemen to eat at their banquets, too.

Vitellius dragged through the streets of Rome.Credit: Georges Rochegrosse. 1883.

He was also quite vicious and reportedly either had his own mother starved to death or approved a poison with which she committed suicide.

Vitellius was ultimately murdered in brutal fashion by supporters of the rival emperor Vespasian, who dragged him through Rome's streets, then likely beheaded him and threw his body into the Tiber river. "Yet I was once your emperor," were supposedly his last words, wrote historian Cassius Dio.

6. Caracalla

Marcus Aurelius Antoninus I ruled Rome from 211 to 217 AD on his own (while previously co-ruling with his father Septimius Severus from 198). "Caracalla"' was his nickname, referencing a hooded coat from Gaul that he brought into Roman fashion.

He started off his rise to individual power by murdering his younger brother Geta, who was named co-heir by their father. Caracalla's bloodthirsty tyranny didn't stop there. He wiped out Geta's supporters and was known to execute any opponents to his or Roman rule. For instance, he slaughtered up to 20,000 citizens of Alexandria after a local theatrical satire dared to mock him.

Geta Dying in His Mother's Arms.Credit: Jacques Pajou (1766-1828)

One of the positive outcomes of his rule was the Edict of Caracalla, which gave Roman citizenship to all free men in the empire. He was also known for building gigantic baths.

Like others on this list, Caracalla met a brutal end, being assassinated by army officers, including the Praetorian prefect Opellius Macrinus, who installed himself as the next emperor.

7. Tiberius

As the second emperor, Tiberius (ruling from 42 BC to 16 AD) is known for a number of accomplishments, especially his military exploits. He was one of the Roman Empire's most successful generals, conquering Pannonia, Dalmatia, Raetia, and parts of Germania.

He was also remembered by his contemporaries as a rather sullen, perverse, and angry man. In the chapter on his life from The Lives of the Twelve Caesars by the historian Suetonius, Tiberius is said to have been disliked from an early age for his personality by even his family. Suetonius wrote that his mother Antonia often called him "an abortion of a man, that had been only begun, but never finished, by nature."

"Orgy of the Times of Tiberius on Capri".Painting by Henryk Siemiradzki. 1881.

Suetonius also paints a damning picture of Tiberius after he retreated from public life to the island of Capri. His years on the island would put Jeffrey Epstein to shame. A horrendous pedophile, Tiberius had a reputation for "depravities that one can hardly bear to tell or be told, let alone believe," Suetonius wrote, describing how "in Capri's woods and groves he arranged a number of nooks of venery where boys and girls got up as Pans and nymphs solicited outside bowers and grottoes: people openly called this 'the old goat's garden,' punning on the island's name."

There's much, much more — far too salacious and, frankly, disgusting to repeat here. For the intrepid or morbidly curious reader, here's a link for more information.

After he died, Tiberius was fittingly succeeded in emperorship by his grandnephew and adopted grandson Caligula.

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Entangled drumheads.

Credit: Aalto University.
Surprising Science
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