It has some really nice properties, but trades off a key feature of the gantt format: your hands can only be doing one thing at a time. With the gantt format it’s very clear what you are supposed to be doing at any time and it preserves the order of operations. It doesn’t express how things are combined, however, which the tree format accomplishes.

My motivation for the gantt format was to prevent getting “meanwhiled” by a recipe. You are chugging along, and think you are in good shape, and come across that dastardly word in a recipe: Meanwhile. Turns out you should have beaten the eggs to a stiff whip 15 minutes ago.