Today, let's discuss a rarely addressed issue. You monitor charts daily, analyze candlesticks, chase hot topics, feeling like you're fighting against the market. But have you ever wondered—are the prices you see, the collateral ratios you rely on, and the various trades you participate in truly as you imagine them?

Let me share a possibly uncomfortable fact: you're not trading the coin itself, but the data on the chain. And the source of that data? It might be the most vulnerable part of the entire system.

It's like being at a supposedly completely fair gambling table, but the dealer has a set of cards that can be swapped at any time.

**The Deadly Flaw of Blockchain: Information Vacuum**

Blockchain is powerful—code execution, difficult to tamper with. But it has a fundamental flaw: **it knows nothing about the outside world**. How much is Bitcoin worth now? Is the asset behind a certain NFT real or fictional? It cannot see anything that happens off-chain.

It needs someone to tell it—this "teller" is called an oracle. What if the oracle gives false information or intentionally deceives? Then, the "immutable" protocol will execute based on incorrect data. Your positions could be wrongly liquidated, the assets you buy could be baseless, and fair outcomes could be predetermined long ago.

This is the underlying issue behind all DeFi applications, blockchain games, and on-chain finance—an issue that no one actively discusses but can overturn everything.

**Emerging Solutions**

Some projects are exploring a different approach—building mechanisms to make data sources harder to manipulate. The core idea is: instead of trusting a single data provider, make multiple independent data nodes check and balance each other, raising the cost of fraud to a point where it's not worth it.

This could change the game. But only if this mechanism can truly be implemented.