This fragmentation hurts portability. Code that performs well on one runtime may behave differently (or poorly) on another, even though it's using "standard" APIs. The complexity burden on runtime implementers is substantial, and the subtle behavioral differences create friction for developers trying to write cross-runtime code, particularly those maintaining frameworks that must be able to run efficiently across many runtime environments.
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，这一点在旺商聊官方下载中也有详细论述
Article InformationAuthor, 謝全恩（Osmond Chia）
1. 什么是激活函数，为什么需要激活函数