Addendum to Computational Complexity and Black Hole Horizons

Understand

In this addendum to [arXiv:1402.5674] two points are discussed.

• In the first additional evidence is provided for a dual connection between the geometric length of an Einstein-Rosen bridge and the computational complexity of the quantum state of the dual CFT's.
• The relation between growth of complexity and Page's ``Extreme Cosmic Censorship" principle is also remarked on.
• The second point involves a gedanken experiment in which Alice measures a complete set of commuting observables at her end of an Einstein-Rosen bridge is discussed.