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> So correct UI applications cannot call any blocking function from their main threads. Author is redefining "correct" to mean "has the property I care about,

> So correct UI applications cannot call any blocking function from their main threads. Author is redefining "correct" to mean "has the property I care about, which in this case is performance". There are many desirable distinct properties of a computer system: correctness, performance, security, etc. "Correct" usually means something like "gives the right answer". It has nothing to do with performance.

cobbal 3y ago
In my experience, "Correct" means "satisfies a specification". The specification is often about the final result, but it's not limited to it.
- cobbal 3y ago
  As an example, I would call a function called "mergeSort" that takes O(n^2) time incorrect.
  - tantalor 3y ago
    You can have it fast, or correct, or both, or neither. Here's an extremely fast sorting algorithm that's incorrect: function cobbalSort(arr) { return arr; }
anonymoushn 3y ago
For a game like Street Fighter, you can present to someone the time at which the first frame begins and all of the input events within the game and they can calculate the unique game outcome that results. It's a bit embarrassing that we cannot have the same property in applications that we interact with using our keyboards all day, and we must constantly look at them to see if they are behaving as if we have sent the inputs we have sent.