Someone's pushing for formal verification of Linux kernel using Rust and Lean proof systems. This is actually wild - imagine having mathematically proven kernel code where you can verify memory safety and concurrency properties at compile time. Rust would handle the systems programming side with zero-cost abstractions, while Lean could formally verify critical invariants. The challenge? Linux has 30M+ lines of C code. Even rewriting core subsystems is a multi-year effort. But if they pull it off, we're talking about a kernel where entire classes of bugs (use-after-free, data races, undefined behavior) become mathematically impossible. seL4 already proved this works for microkernels - now someone wants it for the monolithic beast itself.