Scapple is the software equivalent of how to solve my preliminary thoughts on paper. (If you do not hate both the word “brainstorming” probably you call it brainstorming software).
When I’m in the early stages of any project, whether a writing project or a software project, I tend to throw lots of ideas on a large sheet of paper, spacing ideas , even unrelated, grouping related notes, and draw connections between them, trying to figure out how everything fits together.
In summary, then, Scapple is a tool for early ideas as quickly as possible and make connections between them. The main advantage of doing this in Scapple rather than on paper is not out of paper (the canvas Scapple expands to fit as many notes you want to create), you can move notes to give rise to new ideas and connections it is easy to remove and edit notes, and easily export your notes to other applications when you know what you want to do with them.