所以更务实的做法，是把入口找小一点。先在某一个细分场景扎进去，做得很深，比如现在不少创业团队的策略，就是先“蹭一下龙虾的流量”。借着这波生态起来的机会，把自己的产品接进去，先活下来，再慢慢看有没有机会长出自己的东西。
We can change the problem a bit. React, for example, uses a pull-based reactivity system, but can isolate certain components in the rendered tree and say “only this component and all its children should update”. This means that instead of having to re-render the entire world, it only needs to re-render a given component and its children. The mechanism by which this works is interesting, but I’ll explore that in a follow-up post because this one is already getting too long!
，更多细节参见新收录的资料
第五十五条 当事人应当对自己的主张提供证据。
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