I think imagination is limited by our experiences but by listening to someone else's experiences or by reading or watching T.V. , movie etc. it can expand our imagination. But what is imagination or is it fantasy. Eg. You imagine your dream home but would it actually be a fantasy because you know you can never afford it. Now if you fulfill a fantasy you have to make up another one and so on. Eventually you will run out of ideas. If you can make your imagination become reality wouldn't you run out of imagination. Wouldn't that make life boring... That's just my opinion.