New York, 2022 (film timeline). Forty million people. The Soylent Corporation distributes green wafers—high-energy plankton, the label says. Efficient, scalable, feeding millions. Thorn investigates. Discovers the wafers aren't plankton. They're recycled human remains processed at euthanasia centers. The system runs on concealed input. Hexagram 27: nourishment. The mouth is a gate. What enters determines health or corruption. The text asks two questions: What are you taking in? What is the actual source? You're consuming dependencies from npm, data from third-party APIs, recommendations from models you didn't train. The interface says "trusted." The label says "enterprise-grade." You don't audit the source. You don't check what the wafer is made of. The inputs feed your system while poisoning it with someone else's assumptions, biases, and margins. The failure mode isn't malicious tampering. It's convenient blindness. You trust the label because auditing is expensive. But unexamined inputs become structural vulnerabilities. The vendor goes under; your dependency chain breaks. The API changes terms; your product stops working. The model drifts; your results corrupt. Soylent Green endures because it names the cost of not asking. Audit the source before you swallow the output. Nourishment requires scrutiny, not just efficiency. The mouth is a gate you control—or one that controls you.