Reflection, for example, was heavily used by Smalltalk tools to build and debug objects alive. Growing programs without the need to stop them is also very much

Reflection, for example, was heavily used by Smalltalk tools to build and debug objects alive. Growing programs without the need to stop them is also very much in the Lisp tradition. See, e.g. the JPL remote bug in spaceship story [1]. [1] https://ti.arc.nasa.gov/m/pub-archive/176h/0176%20(Havelund).pdf https://ti.arc.nasa.gov/m/pub-archive/176h/0176%20(Havelund)...