Twitter PMs would argue they've already communicated the objective function: relevance and engagement. My point is that the devil is in the details and impleme

Twitter PMs would argue they've already communicated the objective function: relevance and engagement. My point is that the devil is in the details and implementation. These details are likely something that no one person understands and no one person is able to fix. The concept of being able to extract "the algorithm", factor it out from the codebase and share it with the public doesn't make sense to me. It won't be possible to fully understand how Twitter serves recommendations and ranks posts without understanding how all the different services at Twitter interact. Are they planning on open sourcing all of Twitter? Highly doubtful.