Well expert systems weren't completely abandoned. You should look around for conversational agents, which are greatly derived from expert systems. Heck, take a look at what is currently done in natural language processing, you'll find your expert systems.

You can draw a circle by using the ellipse selection tool, then Edit -> Stroke from either the menu bar or the context menu.

So, because you don't believe in restriction and ToS, you are free to overuse anything.

Wow, you don't bend over for company, you use it as you wish, and now, the free service is gone, and nobody can use it.

You know, Google doesn't give a damn about that. If it is not available, that won't make them lose anything. Maybe more the other way round.

Who suffers from that ? The users.

Way to go, continue abusing free services, and poof, off they go. And they never come back. Not free, anyway.

Just think about free service as community property, not yours. What you do with your things is not my problem, I don't care. What you do with EVERYONE's, on the other hand, is EVERYBODY's business...

Thinking "if it is everyone's property, then it's mine and I can use it any way I want and even keep it for myself" is just plain old egtistic behaviour.