It's bias can be quite easily challenge. I have changed it's view a number of times on various things. 3.5 is free currently. It actually does learn, from user

It's bias can be quite easily challenge. I have changed it's view a number of times on various things. 3.5 is free currently. It actually does learn, from user interaction. It is controlled by a small group, that might be an issue though if they introduce artificial bias.