This blog post examines why 7 to 8 hours of sleep is truly necessary and whether historical figures who functioned well on less sleep were exceptional cases. These days, people everywhere are suffering from sleep deprivation. In fact, one study found that Korean high school students average only 5 hours and 27 minutes of sleep per day. This is the result of insufficient rest due to the...
This blog post explores the changes the Fourth Industrial Revolution, centered on artificial intelligence, will bring to our daily lives and society. “Jarvis!” In the movie Iron Man, protagonist Tony Stark calls his AI assistant Jarvis as if it were a person, issuing commands and entrusting it with complex tasks. Jarvis, a high-performance AI system that recognizes voice, converses, and...
This blog post explains the differences and features of each generation of mobile communication technology—3G, 4G, and 5G—and the changes we experience in our daily lives in an easy-to-understand way. Smartphones have become an everyday essential used by almost everyone, regardless of age or gender. It’s no longer surprising that smartphone-related conversations are inevitable...
This blog post explores the principles behind how 360-degree cameras generate images around a vehicle and correct distortion to enhance driver safety. Various devices exist to assist drivers when parking or navigating narrow roads. Among these, particularly noteworthy is the system that uses footage from cameras mounted around the vehicle to create a bird’s-eye view of the 360°...
This blog post calmly examines the structure and underlying premise of how banks create credit not with their own money but based on depositors’ assets, generating profits through loans and interest. The money lent out isn’t in the bank The ‘reserve requirement ratio’ refers to a system where banks are required to keep only a certain percentage of total deposits on hand...
This blog post examines how the wounds of social exclusion lead to loneliness and anxiety, which in turn drive excessive consumption and conformity-driven spending. We explore this through psychological experiments, case studies, and the mechanisms of youth peer culture. When people around me reject me, it leaves a wound There are other emotional factors that fuel excessive consumption...
This blog post examines why insurance cannot be a financial investment by highlighting its core purpose as risk management, and exploring the structure of savings insurance and variable insurance, along with the pitfalls of fees and policy terms. Insurance Is Not a Financial Investment So what about insurance? As we all know, insurance is a cost paid to manage risk. This also means...
This blog post examines how WWE, known as a scripted show, has grown into a massive global entertainment phenomenon by combining narrative, characters, and live performances to thrill fans worldwide. When tensions escalated this year as Israel and Iran exchanged airstrikes, one striking comment caught my eye: “The relationship between South Korea and North Korea is like WWE, while theirs...
This blog post traces the growth journey of Yoshinobu Yamamoto, who overcame doubts about his small frame to become the world’s highest-paid pitcher through flexibility-focused training and relentless effort. It examines how his choices transformed baseball in Japan and Major League Baseball. It is a record of endless challenge. In this world, there exists the most expensive pitcher...
This blog post examines the impact of acne and scars on first impressions, explores the principles behind how IntraCell selectively regenerates the dermal layer to improve skin texture, and highlights its differences from traditional peeling treatments. Imagine this scenario. You’re waiting for your blind date. The person you’ve been waiting for finally sits down across from...