How does that help in the context in the current discussion? We're clearly drawing a distinction between technical implementation details and design decisions.

How does that help in the context in the current discussion? We're clearly drawing a distinction between technical implementation details and design decisions. Twitter made a design decision to only allow following people and Topics, and not supporting a dislike button. Notice how I didn't mention anything about how those are implemented, because those would be technical details. Everyone's bogged down in how Twitter is implemented, rather than addressing the high-level design of the website itself.