Siri is not a magic 8 ball, you can't shake it and get advice from it anymore. It has a practical use. It does things which are integrated into iOS.
Most everything it does are connected with the Pre-installed apps that come with iOS.
I wish you could have more of a conversation with it and that it was smarter, because it feels like an accessibility option for blind people.
But she will tell you what she can't do:
"Take a picture."
I'll leave the picture taking to you.
"Take a video."
I don't know what you mean by, "Take a video."
"Send a Tweet."
I can't help you with Twitter. Sorry to let you down.
"Open an app."
My apologies, I cannot do that.