No, it isn't. It's not just contradiction. Look,. if I argue with you I must take up a contrary position. Yes, it is. Argument is an intellectual process.
Contradiction is just the automatic gainsaying of anything.
No, it isn't. Sorry, the five minutes is up. I'm afraid it was. I'm sorry, but I'm not allowed to arguer any more. If you want me to go on arguing you'll have to pay for another five minutes.