A MethodChannel typo cost us three days and a hotfix release, and the compiler never said a word. That's the whole story of Flutter native interop in one sentence: the easy path is a stringly-typed message bus that fails silently in the field, and almost everyone reaches for it first. Every Flutter developer's first brush with native code goes the same way. You need something the framework doesn't give you — a battery level, a hardware sensor, a C library your backend team already trusts — ...