Hackathon are not about tweaks. They are all about exponential thinking. This is about taking a moonshot within 36 hours or so. The teams get down to building prototypes and speed-coding. It is best if they can create a working prototype in 36 hours. That too about a goal that is crazily tempting simply because of the impact that it could have. And then again... it might fail. So what. Hackathons are not for the faint-hearted. It is race to complete an impossible task.