Why is digital paper not an option here? If we're talking about a timeline of 100 years, I'm almost certain we'll have something thin, reusable, with low power

Why is digital paper not an option here? If we're talking about a timeline of 100 years, I'm almost certain we'll have something thin, reusable, with low power that you can write on with a stylus. After all, we're almost there today: we're just missing the thin part.[0][1][2] [0]: http://myboogieboard.com/ http://myboogieboard.com/ [1]: http://remarkable.com http://remarkable.com [2]: http://noteslate.com/ http://noteslate.com/