frame impact explicitly
what happened
Congressional App Challenge — didn't present well, impact wasn't framed clearly enough. "Pause could have been perfectly fine if i just say one extra thing that it does." the project was solid but the presentation undersold it.
why it's a gotcha
judges won't infer impact. if you don't say "this helps X people do Y thing Z% faster," they won't figure it out themselves. you know how impactful your project is because you built it. they don't — they're seeing it for 5 minutes. the gap between what you know and what you communicate is where you lose — and this is the core of why pitching matters as much as the product.
the fix
frame the impact explicitly. state it in plain language. "this app saves teachers 3 hours per week on grading" is better than a vague demo that shows grading features. write down 2-3 impact statements before your presentation. your one-liner should include impact, and you should practice saying it out loud. if a single extra sentence could have made the difference, that sentence should be in your opening, not left to chance. make sure you're framing impact in terms of what judges care about.