The problem is human nature.
Many market predictions are short-term and often in line with human nature, making them easily accepted, but predictions are often distant or inconvenient truths.
The human brain deliberately closes its eyes to truths it finds uncomfortable to accept, even if they are absolutely necessary for protecting one's life and safety.
The human brain, which is a protein tissue weighing 1500g, is lazy and readily accepts information similar to what it normally thinks.
Because it's comfortable.
However, even if it is a fact that is absolutely necessary to protect life and property, if it is an inconvenient truth, we turn away from it.

---From "Intro, Don't Try to Predict the Market"

Have you ever played tennis or table tennis? In amateur table tennis or tennis, the team that wins isn't the one with the flashy, powerful attack, but the one that minimizes mistakes and effectively returns the ball to the opponent.
In the world of investing, where there is no such thing as a true professional, most players are amateurs.
In other words, simply reducing mistakes can significantly improve investment performance.

---From "Prologue: If You Have Just 1 Million Won, Now Is the Time to Draw Up an Investment Scenario"

But will the future of Apple and Samsung Electronics be the same as it is now? Will the current leader remain the leader in the future? Will these companies still be in the market 20 to 30 years from now? Will investing in them increase my returns? As mentioned earlier, Nokia's market share was 30%, significantly higher than that of Samsung Electronics or Apple.
Nokia held the world's top spot for a whopping 13 years before it folded its mobile business.
(...) What if you had invested in Nokia, the world's leading and blue-chip stock, and held onto it for the long term? If someone had bought and held Nokia stock in January 1999, they would have lost 35% of their initial investment by the end of December 2021.
Even if you had entered at the previous high in April 2000, you would have been recording a loss of -84%.

---From "Part 1, Blue Chip Stocks_ Should I Invest Long-Term in 'Major Stocks'?"

If a person with a seed capital of 10 million won invests for 30 years at an annual return of 10%, their balance will grow to 174 million won.
This is a larger amount than the 130 million won that a person with a seed capital of 50 million won would earn over 10 years with an annual return of 10%, and it is also a larger amount than the 167 million won that a person who started with 40 million won would earn over 15 years.
A larger amount of wealth is created when the investment period is three times longer than when the seed money is five times larger, and a larger amount of wealth is created when the investment period is twice as long than when the seed money is four times larger.
In other words, the length of the investment period is more important than the size of the seed money.

---From "Part 1, 100 million won in seed money_ Don't invest before saving up a lump sum?"

Even in the realm of investing, there are stories of animals that are better than humans.
In 2000, the European edition of the Wall Street Journal published an interesting article.
This study compared the returns on recommended stocks of three groups: a group of investment experts, a group of amateur stock investors, and monkeys, four times over the course of one year from July 1999.
As a result, it is said that the monkey group took the lead.
The monkeys chose the game by throwing darts, and when the returns were converted to points, the monkeys performed the best with 11.4%, while the experts recorded -13.6% and the amateurs recorded -124.6%.

---From "Part 1, Future Forecasting_ How Accurate Are Securities Firms' Market Forecasts?"

Asset allocation investing is a beneficial investment method for working professionals who find it difficult to devote a lot of time to studying investments.
It is also helpful for those who have difficulty predicting market timing or responding immediately.
Because it requires little investment, has low volatility, and offers a reasonable level of return, it is also suitable for managing long-term funds such as retirement pensions or housing funds.
Of course, it is difficult to experience the direct and intense joy of shooting a harpoon.
Also, you can't feel the pleasure of fishing.
But you can 'continuously' catch delicious fish with a steady and steady income.

---From Part 2, “Is there a way to invest with peace of mind without being swayed by the market?”

From 2000 to 2021, the K-GAA portfolio experienced a loss only once in 22 years, in 2018.
Even so, the loss was very small at -0.2% per annum.
For the other portfolios, the GAA portfolio had three years of losses, the Permanent portfolio had six years, the Jewish portfolio had three years, and the 6040 portfolio had four years.
When viewed on an annual basis, the largest losses by portfolio were -7% for the GAA portfolio and the permanent portfolio, -8% for the Jewish portfolio, and -24% for the 6040 portfolio, but the K-GAA portfolio only recorded -3%.
You can see how superior the K-GAA portfolio is in comparison.

---From "Part 2, K-GAA Portfolio_ Connect the Benefits of a Strong Dollar to Your Portfolio"

If you continue to invest the amount you receive as a tax deduction each year in your IRP account, you will accumulate a substantial amount of money.
At age 60, 606.72 million won will be accumulated in the pension savings fund account alone, and 114.37 million won will be accumulated in the IRP account, resulting in a combined retirement fund of 721.09 million won.
This is equivalent to 369.75 million won in present value, which is equivalent to receiving 22.56 million won annually from the age of 60 to 90.
This means that you will have 1.88 million won available for living expenses every month.
---From "Part 3, Retirement Planning_ A Scenario for Earning 1.87 Million Won Per Month for Life with a Monthly Investment of 500,000 Won"

To summarize this method very briefly, it is like 'adjusting the water in ramen'.
The recipe on the back of the ramen package is a 'super recipe' that the ramen company has researched to make the ramen most delicious.
My eldest child, a middle school student, said that the ramen I cooked according to this super recipe was a little spicy, while my second child, an elementary school student, said that it was very spicy.
So for the kids, I add a little bit of water to the first one and more water to the second one.
If you add just the right amount of water, children will find the ramen less spicy and enjoy it more.
In this way, the spiciness of an investment portfolio can also be adjusted.
By adjusting the proportion of ‘cash assets’ as if adjusting water.

---From "Part 3, Super Portfolio - Investing as Easily as Adjusting Water in Ramen with 'Tobin's Separation Theorem'"