Thanks, I'm plenty aware of gdb and debuggers:) (ex-google software engineer, etc etc) Go watch the video. Bret presents a very cogent vision for a dramatic improvement on most of today's standard engineering/design tools.
for ( var i = 1; i < 16; i++) {
var br = 255 - ((Math.random() * 96) | 0);
for ( var y = 0; y < 16 * 3; y++) {
for ( var x = 0; x < 16; x++) {
...
}
}
}
My interpretation of Bret's idea is that it would be better to have the ability to highlight the section of the texture being written by each section of the loop. It's not the sliders & live editing that are most important it's about linking abstract control into meaning within the learner.