But if we begin thinking about the world being over 100 million years old, then it's absolutely by chance that you and I are sitting here alive today, while all the others are dead or have never been born.

The quote "But if we begin thinking about the world being over 100 million years old, then it's absolutely by chance that you and I are sitting here alive today, while all the others are dead or have never been born." by Thor Heyerdahl reflects on the fragility and rarity of human existence. Heyerdahl emphasizes that when we consider the immense age of the Earth, the fact that any two people are alive at the same moment in time is an extraordinary outcome of chance. This perspective shifts our view of life from something taken for granted to something profoundly improbable and therefore precious.

The meaning centers on perspective and gratitude. By comparing our brief lifespans to the planet’s vast geological history, Heyerdahl highlights how countless others have lived and died—or never existed at all—making our own presence statistically remarkable. This awareness can foster a deeper appreciation for the present moment and for the relationships and opportunities we experience. It also subtly acknowledges the role of randomness and coincidence in shaping who we are and when we exist.

The origin of this statement lies in Heyerdahl’s worldview as an explorer, ethnographer, and adventurer best known for the Kon-Tiki expedition. His work often bridged science, history, and human curiosity, encouraging people to think about humanity’s place in the larger context of time and nature. The vast timescales he encountered in his studies of human migration and ancient civilizations likely shaped this reflection on how fleeting and improbable our lives are.

Ultimately, the quote serves as a reminder of both our smallness in the scope of history and the significance of being alive right now. Heyerdahl invites us to marvel at the unlikelihood of our existence and, perhaps, to live more intentionally knowing that our moment in the timeline of the world is brief and granted largely by chance.