Part of the value of push-based systems is that each node only needs to keep track of its own dependencies and dependents, which makes analysing each node locally easy, but analysing the system as a whole hard. In the extreme case, you might dynamically create and destroy nodes in the tree depending on previous values — this doesn’t make sense for our spreadsheet analogy, but is essentially what’s happening with RxJS’s switchMap operator. Essentially, the more dynamism we want in our system, the harder it is to achieve efficient updates, and the more we want efficient updates, the more we need to specify our dependency graphs up-front.
The solution to today's Connections #1001 is...
，推荐阅读新收录的资料获取更多信息
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On the evening of 17 September 1908, a young American officer named Thomas Selfridge climbed into a fragile wooden aircraft at Fort Myer, Virginia. Minutes later, he would become the first person in history to die in the crash of a powered airplane.
，这一点在新收录的资料中也有详细论述
A recent report by The Wall Street Journal claimed that in 2025, some OpenAI employees flagged the account of the alleged shooter, Jesse Van Rootselaar, as containing potential warnings of committing real-world violence and called for leadership to notify law enforcement. Although Van Rootselaar's account was banned for policy violations, a company rep said that the account activity did not meet OpenAI's criteria for engaging the local police.。新收录的资料对此有专业解读
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