Every thing started from somewhere or some thing big or small. Usually things evolve. From slim to fat, from fat to sexy. Just like the image above. When the television was invented it was so big that could even occupy a lot of space for your living room. But now with the technology we have, it’s getting smaller and smaller and slimmer that could even look like a wall decor for your living room.
And the other way around, just complete the whole picture 
I got this from some forums I joined in.