1. "Thinking" is a word we apply with no discipline whatsoever to a huge variety of reported behaviors. "I think I'll go to the store" and "I think it's raining" and "I think therefore I am" and "I think the Yankees will win the World Series" and "I think I am Napoleon" and "I think he said he would be here, but I'm not sure," all use the same word to mean entirely different things. Which of them might a machine do someday? I think that's an important question.
2. Could a machine get confused? Experience cognitive dissonance? Dream? Wonder? Forget the name of that guy over there and at the same time know that it really knows the answer and if it just thinks about something else for a while might remember? Lose track of time? Decide to get a puppy? Have low self-esteem? Have suicidal thoughts? Get bored? Worry? Pray? I think not...
Get yourself out of the 0th Century, man!