Solipsism

"Oh, good," said the other voice. "And here I was afraid that you were just going to create random pieces of furniture and leave them floating in nothingness."

"That is not what I meant, and you know it," I said. "Knowing what type of reality I want to create is very important. I've always found it better to start small, and work my way inward."

"And just what types of worlds are there? I mean, a planet is a planet, no matter what type of terrain you decide on."

"That's not what I mean, either," I said. "I don't want to start over from the beginning. That takes too much time, and you'll just ruin it anyway."

"Or so you say," replied the other voice.

I continued on. "Do I want a world that isn't technologically advanced? Do I want a world that is very technologically advanced? Or, maybe I want a world where magic is real..."

"I fail to see the difference between those last two," said the other voice. "If the end result is the same, does it really matter if it's due to technology or to magic?"

"Yes, yes it does," I said. "It affects the whole flavor of the world. Just... trust me, it matters. And this time, I think I'll make...