On-chain smart contracts are like super brains trapped inside a transparent glass house—logic is impeccable, execution is precise and flawless, but once it involves the real world outside the chain, it becomes completely blind. It can read every byte on the blockchain but knows nothing about what happens in the real world. This information silo ensures security but also becomes the most stubborn problem in the DeFi ecosystem. Oracles are supposed to solve this contradiction, but unfortunately, most solutions only open a small crack.

How deadly is the single point of failure in traditional oracles? Imagine a DeFi protocol that can only obtain ETH prices from a few mainstream exchanges—it's like sensing the entire world with just one arm. If this "tentacle" gets stuck (data source manipulated, server crashes, or attacked), the entire system falls into trouble. The 2022 oracle storm is a vivid example—attackers exploited these vulnerabilities to siphon off hundreds of millions of dollars.

Even more embarrassing is that real-world data types are far more complex than simple price quotes. The final outcome of a football match, whether rainfall in a region meets insurance requirements, whether goods arrive at the port on time... These unstructured, multi-dimensional pieces of information are simply beyond the reach of traditional oracles. They are too fragile, too vulnerable, and too easily manipulated.

APRO's approach is different—rather than relying on a single tentacle to muddle through, it extends multiple tentacles like an octopus to sense simultaneously. Multi-source data aggregation, multi-modal information processing, distributed verification mechanisms... this combination is the only way to truly break down the information barrier between smart contracts and the outside world.