Before this reading, I never really gave much thought to what interactivity actually means. I knew when something was interactive, but I never really stopped to think about what makes one interaction stronger than another. I really liked the idea that interactivity can exist at different levels rather than something simply being interactive or not. For example, I obviously knew that a conversation was interactive because you respond and reply to another person, but I never thought about how the way a conversation flows can actually affect the level of interactivity. If one person is doing most of the talking and the other is barely responding, it is very different from a conversation where both people are listening, thinking, and responding to each other. I think this helped me understand interactivity much better because it is not just about getting a response, but about how much of an exchange is actually happening. For me, a strongly interactive system would be one where the users actions actually matter, and the system responds to what they are doing in a way that keeps that exchange going.
Thinking about my own p5 work, I honestly have not really included much interaction in my projects so far. I feel like this is something I need to start adding, even if I begin with really simple interactions. For my project this week, for example, I could use mousePressed() so that the user can pop things on the screen, add more objects, or decide how many they want to add rather than everything already being decided for them. I think even simple interactions like these could make a big difference because the user would actually be participating in what is happening on the screen instead of just watching it.