The algorithm is clearly biased. Basically, it's a sentence generator based on content written by humans in the past.

So, for example, it would be able to give you great source code for hello world programs in many languages, but if you ask something more niche, or different, it doesn't have the capacity to think and give you a response to that. It basically has to be done before, or a combination of things done before.

It can still be useful if you apply your own mind to it, and also your ability to ask what you need (an AI just like an animal, doesn't initiate conversations)