From the article: While we are ultimately interested in the physical limits of computers in our universe, working within the context of the AdS/CFT corresponde

From the article: While we are ultimately interested in the physical limits of computers in our universe, working within the context of the AdS/CFT correspondence gives us a precise framework for quantum gravity. As well, a fundamental observation in computer science is that the power of computers is robust to “reasonable” changes in the details of the computing model: classical computers can be described in terms of Turing machines, uniform circuits, etc. and the resources needed to solve a given computational problem will change only polynomially. Quantum computers are similarly robust. This robustness suggests understanding the power of computers in AdS is likely to yield insights that apply more broadly. I'm decidedly not an expert in this field but as I understand it there are two points to doing the math in this way: - We know how to describe the inside of a black hole mathematically from an AdS perspective. - IF the AdS/CFT correspondence is true (likely but unproven), then you can generalize from "works inside black hole" to "works inside the normal universe". It's more an exploratory step towards getting a better understanding of complexity theory for quantum computers than it is a practical result intended for doing computations inside black holes.