I'm imagining a webpage with a link - instead of opening a new link to quickly google something or opening three new tabs based on hyperlinks, i can point at a paragraph or line and ask it to tell me about it.
Maybe I can point at a song on Spotify and have it find me the youtube video, or vice versa (of course this is assuming a tool like this wouldn't stay locked into one ecosystem.. which it will).
Point is that the concept of talking to the computer with mouse as pointer is pretty cool and i guess a step closer to that whole sci-fi "look at this part of the screen and do something"