Deep dive into binding objects, lexical scope preservation, and closure footprints.

A Binding object encapsulates the entire execution context at a given point in code, preserving local variables, self, and methods even after the surrounding scope exits.

Closures like blocks, procs, and lambdas carry an internal reference to a Binding object. This binding captures the exact environment where the closure was defined—including local variables, instance variables, methods, and the value of self. Because the closure retains this reference, captured variables cannot be garbage collected as long as the closure remains alive, which can lead to memory retention issues if large structures are referenced inside long-lived blocks.