I tend to start out with both. I suppose it's kind of strange but it's what I do. I have to have one with the other and can't do it otherwise. If I hear a character say a line of dialogue ("We wouldn't be in this mess if it wasn't for the bloody unicorn" or something) then that's been affected by the world they live in. The character may have given me the dialogue, but it's been affected by their world. They came into existance at the same moment for me, and I can't separate them.
no subject
I tend to start out with both. I suppose it's kind of strange but it's what I do. I have to have one with the other and can't do it otherwise. If I hear a character say a line of dialogue ("We wouldn't be in this mess if it wasn't for the bloody unicorn" or something) then that's been affected by the world they live in. The character may have given me the dialogue, but it's been affected by their world. They came into existance at the same moment for me, and I can't separate them.
Does this help on your end?