Technical documentation on the reader technology details how it uses "sandboxing" to restrict potentially risky code when opening notebooks from untrusted sources. Core Tools for Reading Notebooks Accessibility Wolfram Player
A prominent academic critique of this technology is found in by economist Paul Romer . Romer explores the tension between: mathematica notebook reader
He acknowledges it as a "perfect vehicle" for research because it allows typeset text and math to be interleaved with runnable code, making results easy to replicate. Technical documentation on the reader technology details how