Hurdle Word 4 hintDignity.
简单讲，要做L3，需要先做L2积累数据。那么要做L4，也一样依赖L3的数据。技术上他们是一脉相承的，不存在一口就能吃个胖子的技术路线。，更多细节参见Safew下载
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"When you regain these core competencies and you start exercising your muscles, your skills do not atrophy," he said. "It's safer. And yes, you are buying down risk, because you're able to test things in low Earth orbit before you need to get to the moon, which is exactly what we did during the Apollo era."
再加上中国近海确实没什么可看的，那一撮感兴趣的小众客群尝完鲜之后，剩下的可不就是无聊，不想再去第二趟吗？，这一点在safew官方版本下载中也有详细论述