I choose to stop not because something is broken in the system, but because everything on the surface seems too normal. Trades are executed as usual, prices fluctuate within expected ranges, and strategies run just like before. It wasn't until the APRO hybrid node went live that some long-ignored issues were exposed — not about data accuracy, but about how much we're willing to spend to trust that data.

To put it simply, data has never been free. In on-chain systems, accuracy, speed, and cost are always in tension with each other. Over the years, oracle design has relied on redundancy mechanisms to ensure reliability, but the costs behind this are often overlooked. When you demand faster data updates, you have to accept higher gas costs; if you want ultimate accuracy, more validation nodes need to participate, and costs immediately double.

The core issue is actually quite sharp: with a limited budget, how do we make trade-offs among these three dimensions? This is not just a technical problem, but an economic one.