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775 articles found
General knowledge
Why can contact lists grow while deep ties stay few? Dunbar’s Number says humans can sustainably keep only so many stable relationships—often about 150—layered as roughly 5, 15, 50
Social welfare
What if everyone received the same money every month, no questions asked? This article covers the origins of basic income from More and Paine, its five defining features, experimen
General knowledge
At the seafood counter of a large supermarket or a sashimi restaurant, you can enjoy olive flounder and rockfish all year round. Advances in aquaculture technology and innovations
Design
Design has established itself as an essential element that goes beyond visual features to communicate a brand’s identity and values. In today’s business environment, companies seek
Robotics
How does a robot with no map work out both its surroundings and its own position? This piece explains SLAM: the chicken-and-egg problem behind it, its roots in the 1986 IEEE roboti
Chemistry
How can pencil lead and a diamond ring be made of exactly the same carbon? This article explains allotropes: what they are and how they arise, the many faces of carbon, examples fr
Statistics
The data in the real world we live in are never neatly organized. Some data are skewed to one side, some have multiple peaks, and others are scattered irregularly without any patte
General knowledge
Why does a measure stop being a good measure once it becomes a target? This article explains the origin and logic of Goodhart's law, examples such as the cobra effect, and how to u
Physics
Neutrinos are among the most intriguing particles in the universe, with their roles and properties still shrouded in mystery. Despite their tiny size and weak interactions, neutrin
General knowledge
This time, I would like to prepare material on eye movements during reading and speed reading. Here, eye movements during reading refer to the movements the eyes make as they follo
Business administration
HR (Human Resources, human resource management) has established itself as a key element in corporate success and securing sustainable competitiveness, and is recognized not merely
Physics
Thin-film interference is the phenomenon in which light reflected from the top and bottom surfaces of a very thin film overlaps, strengthening some colors and weakening others. Thi
