my 2 cents:
I think, if it was possible, to make a hap, and edit the script so that when you typed in a keyword, it would activate the hap, and the program.
I don't know if this is possible, but it is possible to use keywords to make Hal say and do things, like gestures, change clothes, backgrounds, etc.
Maybe the keywords "Start Calculator" And it would open calculator, without saying anything, or just saying what you want her to say.
You could make it as a plug-in. But like I said, I don't know if you can use haps to open programs. [?][?][?][?]