Sure, but your original point seemed to be that any small degree of progress on a Siri variant would be more important than any large degree of progress on a news aggregator. My only point is that the magnitude of the progress matters, and a big change in the "smaller" problem of news aggregation would free up a lot more of my time than a small change in the "bigger" problem. As much as I'd like to be able to dictate research papers and code up a bunch of data analysis over my phone via Siri++ while I'm on a long run on the beach, at some point you have to trust that people choose to work where they think they can make the most progress.