Imagine what Twitter might have looked like some 30 years ago. Imagine what our grandparents think of when they hear about Twitter. Gaston Lisak puts those thoughts in this context: ‘my grandma, like all the grandma’s in the neighborhood, used to own a bird as a pet. However, nowadays the bird cage is open and the bird has been replaced by that of Twitter’. This is his contribution for the Mobile Museum, Beijing Edition, on the theme of TODAY.