A developer shipped an app that looked good on the surface. Colleagues immediately flagged it: "This code is messy, barely readable." Frontend seemed fine. Then came the real problem—the backend was a security minefield. Nobody caught it until later.

Here's the trap: visibility bias. When you build something, you see what's working front-end. You don't see the infrastructure vulnerabilities hiding in the layers below. It's like shipping a product with a beautiful storefront but a broken foundation.

In Web3 development, this gap kills projects. Unaudited smart contracts, poorly structured backend logic, hidden attack vectors—they stay invisible until they explode. A clean UI means nothing if the code architecture is fundamentally compromised.

The lesson? You can't ship based on what you can see. You need external eyes on your backend security before launch. Code review, security audits, stress testing—these aren't optional steps. They're your insurance policy against the invisible failures that destroy trust.