The Wallfacer program doesn't work.

This is the book's central, unspoken truth — the four chosen thinkers produce nothing actionable, yet Earth's leaders implement the program anyway, spending vast resources to hide four men from global surveillance.

Because the program itself — the architecture of selective ignorance — gave governments something they'd otherwise lost: the appearance of control through secrecy. Liu shows this clearly in how the Wallfacers are treated, not as scientists racing toward breakthrough but as quarantined consciousnesses, valuable precisely because nobody, including Earth's own leadership, knows what they're thinking.

The secrecy becomes the point. A general can't say 'we don't know how to survive,' but he can say 'someone is thinking about survival, and you cannot know what they've concluded.' Information asymmetry substitutes for actual power, and this structure mirrors what happened next in our world: corporate strategy became boardroom opacity, technological advantage collapsed into algorithmic mystery, and geopolitical strength became deniable action.

The Wallfacer program was Liu's diagnosis of a disease that had already infected the present, yet we mistook it for speculation about the future. The program's failure is total, but failure doesn't end it — secrecy persists because secrecy doesn't require success, only that someone, somewhere, might believe you know something they don't.