The Joyful Sandboxes is the experience that describes what Ward stumbled into with Kent - experiences that were a critical for the founding of the Agile movement.
Using Smalltalk, a programming language that had been envisioned by Alan Kay to unleash the creative potential of computers, they began to solve complex problems exponentially faster than could be done with traditional, structured programing methods.
Smalltalk provided the sandbox, creating together provided the joy.
Combined, those two elements allowed them to learn faster. These experiences shaped the Spirit of Agile.
Joyful — has to do with student agency and engagement and enjoyment in learning. Connects to Deeper Learning
Sandbox — has to do with a space for building and experimenting. You can build the sand castle and wipe it away and start over at whim.