Initially when human beings graduated from writing on the walls to cutting out pieces of stone to write on, no one would have imagined the journey the process of learning would have taken.
That one first act of man, managed to bring us towards an age where we do not even need a paper to write on with digitalization of everything from our thinking to our writing and reading being made so easy for us.
Even then, men loved to record his activities on stone tablets that might remain etched for even and even now, man desires the same thing, to leave a certain etching of his existence on earth even after he has passed on.
With mobile technology getting digitalized, it has certainly given man a more portable medium, the digital tablet; as compared to was man had to make do with in the form of stone tables.