After looking at Chapter 5 of "The Most Important Thing in Investing," the content can be summarized in four words: understanding risk.

Most of the time, we think we understand risk, but in reality, the concept of what risk truly is can be easily misinterpreted.

Howard Marks condenses it into these points:

1️⃣ Risk is not volatility, but the possibility of “permanent loss.”

In traditional finance, risk is often defined as volatility.

However, Marks disagrees; he believes that the truly important risk is not price fluctuations, but rather: you buy something and later find out it's not worth the price, or even that you may never get it back.

For example, if BTC drops from 100,000 to 70,000 and your asset judgment hasn’t changed, the cyclical logic remains the same, and your position can withstand it, this seems more like volatility. Such fluctuations cannot be called risk, and you shouldn’t treat volatility as risk.

But if what you bought is an asset with a collapsing fundamental, a bankrupt narrative, a team that has run away, and drained liquidity, like EOS, then that’s the real risk. Because there is the possibility of permanent loss, your money is truly gone.

2️⃣ Risk is often underestimated during bull markets.

The most dangerous time in the market is usually not when everyone is scared, but when no one is scared.

Because when everyone is optimistic, prices are pushed up, and margins of safety are squeezed, people mistakenly think:

“This asset is really strong.”

“This sector has no issues.”

“Every dip is an opportunity.”

However, in reality, the higher the price, the higher the risk; the more consistent the emotions, the more concealed the risk.

When I read this, I felt it particularly applied to crypto: a project with a valuation that rises from 100 million to 5 billion may be better, but the investment risk might also increase.

Because you’re not buying “good assets”; you’re buying “the price corresponding to good assets.”

3️⃣ High risk does not equal high reward.

Many people misunderstand the phrase: high risk, high reward.

What Marks wants to correct is that high risk only means the outcome is more uncertain, not that you will definitely gain higher returns.

More accurately, those who take on high risk must demand higher potential returns as compensation. But in reality, it’s often the case that many people take on high risk without receiving reasonable returns, resulting in high risk but low reward.

In other words: you think you’re taking risks to make money, but you’re actually just taking risks.

This is particularly common in altcoins, primary markets, and leveraged trading.

4️⃣ Risk is subjective, implicit, and only revealed afterward.

Risk cannot be precisely calculated afterward like returns can.

Returns are results, while risk is the possibility during the process.

If a person buys a high-risk asset and ends up making money, it does not mean they weren’t taking risks at the time. It’s like someone crossing the road with their eyes closed and not getting hit; it doesn’t mean that behavior is safe.

Thus, Marks emphasizes that evaluating investments cannot rely solely on results, but also on:

How much uncertainty did you take on at that time?

Do you have a margin of safety?

Did you survive by luck?

If history were to repeat 100 times, would you win most of the time?

This is somewhat like what I’ve always said: investing isn’t about winning once; it’s about continuously having the ability to place the next bet in a non-ergodic world.

5️⃣ The ability of a good investor is not just to pursue returns, but to understand and control risk.

Marks’ most important reminder is:

Ordinary investors like to ask: how much can this go up?

Mature investors will ask an additional question: if I’m wrong, how much will I lose?

True excellent investing is not simply about pursuing high returns, but obtaining asymmetric returns while taking on limited risks.

In other words: enough upside potential, with bearable downside risk.

My summary:

Risk is not price volatility, but the possibility of permanent loss; the key to investing is not to avoid all risks, but to only take on those risks that are sufficiently compensated after fully understanding the risks.

Returns are the rewards given by the market, and risks are the ways you expose yourself to death in order to receive those rewards.

True investment ability is not about seeing opportunities, but knowing which opportunities will prevent you from surviving until compound interest pays off.

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