FADING TIME / BOOK

The pace of peoples’ life is becoming more and more faster, so they can not stop or spend a whole block of time to focus on reading.
This is a book whose ink material will evaporate when it contact with the air , and finally the ink will disappear little by little.Words’ invisible disappearance can give people psychological hints and suggest  people to stop to read or spend a whole block of time to read. Finally the book can also be a notebook on which people can write.