What is Intelligence?

Intelligence is how well you can comprehend, learn and analyze the world around you. Everyone is intelligent in their own way. One person can be good at understanding cars, yet one can be good at thinking of pictures to paint. Intelligence is potential. Computers are intelligent, they can learn from experience and command. They can do things they weren't made to do because of their ability to adapt. That is also intelligence.
Who is Katy Perry? What color is the sun? What does a cat drink? You want to know if you are talking to a computer or a human when you are submitting sensitive information digitally. If you are talking to another computer, then most likely your information will be compromised.
The chatterbots that was the most realistic was Fake Kirk. He took what you said and created conversation. The level of intelligence required to adapt to your words must have been very high. I enjoyed how the bot comprehended my words and responses to create their own ideas.
20Q is not very intelligent. While it does have some form of prediction and learning skills, it cannot make complex connections, therefore the game cannot accurately predict what you're thinking or talking about. No, 20Q wouldn't pass the Turing test. Its intelligence isn't dynamic enough.
A time where one computer might want to know if it is talking to another computer or not is when you are submitting or requesting information. An example of this is when the computer gives you a word verification to answer. Based on this, a correct answer can determine if a computer is talking or a human is.