The order of messages as they appear at each replica site is important for the conversation to make sense
Intention preservation is an obvious goal in a chat app because the point of the chat app is to facilitate a conversation between two people where messages are created in response to other messages.
Alice asks Bob a question and sees that the question is optimistically added to her replica of the chat history. In the meantime, Bob is typing up a response to another question Alice asked a day before. If Alice is on a really slow network, Bob will not see her new question come into his chat history until some time after he sends his reply to her old question. Leer más