Don't put all your eggs in one basket
There's an old saying that's very true: "Don't put all your eggs in one basket." Because once that basket drops, every egg is gone.
Applied to money, that's diversification: don't stake everything you have on any single thing. Spread it out, and even if one of them runs into serious trouble, it won't drag you down all at once.
Diversification lowers "single-point" risk
To be precise: what diversification mainly reduces is single-point risk—the risk that one choice suddenly blows up and drags your whole position down. It can't eliminate every risk (such as swings in the overall environment), but it keeps you from "one bomb taking you to zero."
Example: suppose you put 100% on a single thing. If it drops sharply, you've got nowhere to hide. If you split it into several parts held separately, a problem with one part has its blow on the whole spread thin.
Why going all in on one choice is dangerous
Going all in means staking your entire pot on a single choice. Its biggest problem: the moment you're wrong, there's no cushion at all, and the loss can be devastating and hard to recover from.
Even if you're highly bullish on some direction, the world always holds surprises you can't see. Leaving room for the unexpected is far steadier than betting you're certainly right. That's exactly why so many people stress "don't go all in."
自测 · 学完检查一下
想真正动手做题、记进度、攒连胜？到互动课里练。
The most classic line describing diversification: don't put all your ______ in one basket. Fill in the blank.
答案：eggs
"Don't put all your eggs in one basket" is the most classic metaphor for diversification: drop the basket and you don't lose everything at once.
Which type of risk does diversification mainly reduce?
答案：Single-point risk—being dragged down all at once by one choice
Diversification mainly reduces single-point risk, so one "bomb" doesn't take you to zero. It can't eliminate swings in the overall environment, nor directly fix misjudgment or inflation.
What's the biggest problem with going all in on a single choice?
答案：Once you're wrong there's no cushion at all, and losses can be devastating and hard to recover from
The core risk of going all in is having no cushion: the moment your judgment is wrong, the loss can be devastating. This has nothing to do with fees or operational hassle, nor does it mean "you definitely won't profit."
True or false: As long as you diversify, you can eliminate all risk and be guaranteed not to lose money.
答案：False
Diversification mainly reduces single-point risk; it can't eliminate all risk such as swings in the overall environment, nor guarantee against losses. Treating it as "a sure win" is a misunderstanding.
True or false: "I'm so bullish on it, so I'm putting all my money in" is a dangerous mindset worth being wary of.
答案：True
The more certain you are, the easier it is to overlook surprises. However bullish, going all in means no cushion, so you should be wary of the "so sure, so all in" mindset and leave room for surprises.
True or false: The main purpose of diversification is not to earn more, but to avoid losing everything to a single accident.
答案：True
What diversification buys is a steadier process that better withstands surprises; the goal is lowering single-point risk, not directly boosting returns.