In this episode of Stuff You Should Know, the hosts explore "Third Man Syndrome," a phenomenon where people in life-threatening situations perceive an invisible presence guiding them to safety. First documented by Ernest Shackleton during his Antarctic expedition in 1914-1915, this experience has been reported by numerous survivors throughout history, from mountaineers on Everest to people escaping the 9/11 attacks.
The hosts examine possible explanations for Third Man Syndrome, including the "bicameral mind" theory, which suggests early humans perceived their inner dialogue as external voices from gods. They also discuss the possibility that this phenomenon represents a built-in stress response mechanism that provides psychological support during extreme situations, helping people survive when they need it most.

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The Third Man Syndrome, a phenomenon where people in extreme situations sense an unseen presence guiding them, was first documented by Ernest Shackleton during his 1914-1915 Antarctic expedition. While leading a desperate rescue mission across treacherous seas, Shackleton and his companions experienced the sensation of a fourth presence offering encouragement. The term itself comes from T.S. Eliot's 1922 poem "The Wasteland," though Eliot was unclear about its inspiration.
Throughout history, numerous survivors have reported experiencing this mysterious presence. In 1933, English mountaineer Frank Smythe felt it so strongly during his solo Everest attempt that he offered food to his invisible companion. Joe Simpson, while trapped in the Peruvian Andes in 1985, followed a guiding voice to safety, as documented in his book "Touching the Void."
The phenomenon has appeared in modern times as well. During the 9/11 attacks, survivors Ron DiFrancesco and Janelle Guzman McMillan both reported being guided to safety by unseen presences. In another instance, a geologist experiencing a life-threatening cave diving situation was guided to safety by what felt like the presence of her recently deceased husband.
Josh Clark suggests that the "bicameral mind" theory might explain this phenomenon. This theory, proposed by Julian Jaynes, suggests that early humans perceived their inner dialogue as external voices from gods due to their different consciousness structure. Chuck Bryant offers another perspective, suggesting that Third Man Syndrome might be a hardwired stress response, providing psychological comfort and guidance during life-threatening situations.
1-Page Summary
The phenomenon known as the Third Man Syndrome has intrigued both adventurers and scholars, but its origins are rooted in early 20th-century exploratory lore and literary reference.
Ernest Shackleton was one of the first to document the experience of the Third Man Syndrome during his ill-fated British expedition to Antarctica in 1914-1915. Shackleton's ship, the Endurance, was caught and ultimately crushed by sea ice, forcing him and his crew to abandon it. They camped on the floating ice for months.
After the ice floes broke up enough, Shackleton and the crew made a grueling six-day journey in a whaling boat to reach Elephant Island. From there, in a desperate attempt to get help, Shackleton and a few men embarked on an 800-mile journey across treacherous seas to South Georgia Island. During the final leg of their quest for rescue, Shackleton and two other men experienced the sensation of a fourth member being present, an unseen guide who offered encouragement, despite there being only three of them. They all sensed the comforting presence of an additional person as they reached the limits of their physical and mental endurance.
History and Origins of Third Man Syndrome
Extraordinary stories of survival often include accounts of a mysterious presence aiding individuals in dire situations, a phenomenon known as "Third Man Syndrome". Here are a few notable instances.
Frank Smythe, an English mountaineer, made a solo attempt to reach the summit of Mount Everest in 1933. During his climb, Smythe sensed the presence of someone accompanying him so vividly that he even offered food to this unseen companion. It was only when he realized no one else was present that he understood it was his mind creating the sensation of a second presence.
Joe Simpson's harrowing tale of survival is chronicled in his book "Touching the Void". In 1985, Simpson was climbing in the Peruvian Andes when he broke his leg. Faced with an almost certain death, he claims a voice emerged that not only provided encouragement but also gave him clear directions on how to escape the perilous situation, ultimately leading him to safety.
Ron DiFrancesco, who survived the 9/11 attack on the South Tower, recalls being guided to safety by what felt like an invisible force. Amid flames and chaos, an urging presence led him down to safety, making him the last person to exit the tower bef ...
Examples of Third Man Syndrome
The Third Man Syndrome continues to fascinate due to its appearance in extreme survival situations, but its origins and mechanics within the human psyche remain elusive. Chuck Bryant and Josh Clark discuss potential explanations for this mysterious phenomenon.
Josh Clark introduces the concept of the "bicameral mind," referencing Julian Jaynes's hypothesis that early humans perceived their inner dialogue as external voices from gods, due to the lack of an evolved modern consciousness. This ancient mental configuration, Clarke suggests, might explain the Third Man Syndrome experienced by survivors, indicating that these sensed presences are vestigial echoes from our historical mental processes.
Expanding on the premise of intrinsic psychological processes, Chuck Bryant considers the Third Man Syndrome to be a hardwired instinct, a ...
Causes or Explanations for the Third Man Syndrome
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