Finding these optimization opportunities can itself be a significant undertaking. It requires end-to-end understanding of the spec to identify which behaviors are observable and which can safely be elided. Even then, whether a given optimization is actually spec-compliant is often unclear. Implementers must make judgment calls about which semantics they can relax without breaking compatibility. This puts enormous pressure on runtime teams to become spec experts just to achieve acceptable performance.
邹露璐举例说，如果孩子一直随父亲生活，而父亲意外去世，那么在法律上，代孕母亲可能成为唯一的法定监护人。即便她从未实际抚养过孩子，也依法享有监护权。涉及遗产管理时，她还可能依法管理孩子继承的财产。更长远来看，成年后的子女对法定母亲负有赡养义务，即便双方曾签署过“放弃赡养权”的协议，这类约定通常也被认定无效。
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