yes and no. the concept of a rose, no. the concept of an idea/theory/thought, yes in a way. Not to say someone else might not have the same thing, but if the duplicate the image the same, I think so yes. But is it art theft? Not really, as long as they made it their own, though if you take an idea from someone, I would at least assume you would think it needs to be changed in some ways to be your own.
I think it depends. If you copy the concept or idea exactly, with that intention, it's theft. But I think if you just took the basic idea and made it different, it wouldn't be, or if you ended up with the same idea without knowing about the original. For example, little red riding hood. Copying it exactly, isn't really a new idea. Now, drawing what you picture it to be in your mind, or photographing the story, or writing music/poems based on it, it's taking it to a whole new level. It's been taken, but not with the intention to claim it as your own. Otherwise yes, I think you can steal ideas, but only if you're aware of it.
if you like something you pick it up and add it to your repertoire but expand on it, it's just like metaphors and similes in writing or points of view in the world, music, and how you build your own set of principles
I said no because in general I do not believe that there are any truly original ideas. Now, there is an exception, I believe, to that: intellectual work as in a new invention (or something very similar) since an invention implies something completely new.
As far as liturature goes, I don't think there is a single new idea. It's all just rehashed stories and concepts and themes put into a new place or cultural significance. Shakespeare's Romeo and Juliet, for example) came from an Italian poem. At best, we can only write the same story as them but in a better way with more memorable characters and places and themes. Also, I've seen two writers take the same writing prompt (ideas +concept) and take it in completely different directions from each other. So, unless someone is actually plagerising (sp?) another person's words (or very nearly close to that), I do not think you can steal that kind of idea or concept.
As for art... I'm not sure where the line is drawn (no pun intended). Is it considered stealing or copying if a realist painter paints someone else's photograph? (I see this all the time, everywhere.) And then sells that painting? Does a model on DA have any say in the use of how her picture might be painted? (Or what about canded photos of people taken and sold without those peoples' permission?) What about the artists in the mall, on the street corners, in galleries that paint famous people from (obviously) photographs and then sell them? Is that stealing? Or is it not a problem because it requires a completely different type of skills set? (I'm am very curious about this because I am more of a realist painter myself.) How much of a photograph can a digital artist use before it is obvious and credit/permission needs to be given? (I don't know anything about digital art, but I am curious as it seems that there are all kinds of different disputes over this...) Personally, a lot of it seems like splitting hairs to me unless someone slaps their name on someone else's original work or actually traces another's work, which equals blantant art theft. (Although, I do see the exception for that in a lot of digital art and photomanipulations. I don't know how artists resolve those issues unless they upfront purchase all rights to the stock...)
I see I got off track of the question on the art portion... but with the art concept, I go back to my opinion that there really are no new ideas/opinions/concepts. Everything has been done and taken or inspired by something else.
I am curious on how you disagree. What are your thoughts on it?
The other person meant it in legal terms. They said in the US, you can't copyright an idea, so you can't steal it. But I'm not asking whether or not ideas are actually being stolen, just, if it's possible. I know that because there are so many artists, people are bound to do similar concept every now and then. But that doesn't really have anything to do with what I'm asking since I'm really asking if it's possible for someone to take an idea from someone else. And the way I see it, it's very possible since it's possible for someone to look at my nightmare series (just an example) and then copy it, thus stealing my idea.
Just trying to clarify what I'm asking. A lot of people seem to be interpreting the question differently.