I had assumed that Twitter was aware of the implications of its design for conversation and had decided that the controversy boost to engagement numbers was worth creating a toxic environment. For real, consider these two basic elements of Twitter's design. First, any given post has a low maximum length, so any time you want to say more than a sentence or two it needs to be spread over multiple posts (a "tweetstorm"). Second, Twitter has two separate features that let anyone pull any part of a series of posts out of its original context: retweeting and quote-tweeting.