[therobot24]

I think the writer should have also taken a moment to reflect on the underlying _need_ that led to these revolutions. Each need is implicit to what's discussed in the table, but would be useful to help frame the discussion of the underlying questions that are discussed. For instance, going from IR3 -> IR4 created a _need_ of information management, where Google was the first major player in providing search as that means, now agents are taking the role of search & retrieval as a single action.