Hygge (pronounced "hoo-ga") is a Danish concept that encapsulates a feeling of cozy contentment and well-being through enjoying the simple things in life.

Via Negativa suggests that the best way to solve problems or improve systems is not by adding new elements but by removing existing complexities or inefficiencies.

Blue Ocean Strategy is a business theory that suggests companies are better off searching for ways to gain uncontested market space rather than competing with similar companies.

The Law of Triviality is a phenomenon in human behavior where groups tend to devote disproportionate amounts of time to trivial matters, often at the expense of more complex and important issues.

Gratitude Theory posits that acknowledging the positive aspects of life and showing appreciation can significantly enhance mental and emotional well-being.

Dunbar's Number is a theory suggesting that there is a cognitive limit to the number of people with whom one can maintain quality social relationships.

The Law of Diminishing Returns is an economic principle stating that incremental investment in a particular area will yield proportionally smaller gains after a certain threshold.

The Lindy Effect is a concept that predicts the future life expectancy of some non-perishable things, such as a technology or an idea, based on their current age.

Equilibrium refers to a state of balance or stability where opposing forces or factors offset each other. It's evident in various fields: from economics, where supply meets demand, to physics, where forces acting on a body are evenly balanced, preventing motion.

“Cogito ergo sum,” Latin for “I think, therefore I am,” was coined by the 17th-century French philosopher René Descartes, who asserted that while we could doubt everything, the very act of doubt presupposes a thinking self that exists.

A thought experiment is a hypothetical scenario crafted within the mind to probe and dissect complex ideas, issues, or theories.

The Socratic Paradox, famously attributed to the ancient Greek philosopher Socrates, encapsulates a profound truth: the more we learn, the more we realize how much there is to know, and how little we actually grasp.

Liking Tendency refers to the cognitive bias where individuals are more inclined to favor people, products, or ideas that they like, are familiar with, or relate to in some manner.

A pari-mutuel system is a way of dividing a pot among winners relative to the amount they've contributed, adjusted based on the total contributions of all participants.

Hanlon's Razor is a mental shortcut that advises against assuming ill intent when incompetence or ignorance might suffice as an explanation.

The Dunning-Kruger Effect is a cognitive bias that describes the paradoxical relationship between one's competence and their confidence in that competence.

Multiplying by Zero is a powerful metaphor to help us understand the vulnerabilities in any system, project, or personal endeavor.

Double-Loop Learning describes the process of deeply questioning every aspect of our decision-making and challenging the underlying beliefs and assumptions we hold.

Margin of Safety represents the difference between the intrinsic value of something and its market price.

The Theory of Unconscious Thinking suggests that our brains can process information and find solutions even when we're not actively thinking about the problem.