Yeah, direct manipulation of the program in real time. The issue with programming is often that programs tend not do work exactly how we think they work, so we

Yeah, direct manipulation of the program in real time. The issue with programming is often that programs tend not do work exactly how we think they work, so we have to reverse engineer/debug them to find out how they work and then change that into how we want them to work. Especially as programs grow larger. I think visualizing the program and the state of the program can help with this, especially if the visualization can be directly manipulated.