They say, Well, how do I determine what to actually put on the board? Well, that's where needs versus ones comes in. So let's go back to that need versus one. Basically, the way this works is, let's say you want to build an e commerce app. You're a college student, and you want to help your students on campus, buy and sell their use stuff. Sure, you can use Craigslist.

And sure you can use eBay, I'm sure you can use let go and a lot of other apps that are out there, right. But let's say that you want to build something specifically for your college. Let's say you go to University of Pennsylvania, at the Wharton college and you want to build something that just those students can combine sell. So you might think that you need a search screen with filters such as price range, item, category, item, condition, location, so all these things chatting, camera integration, payment processing, etc. But in the end, what you really want to validate here is, do students want to buy and sell from each other on campus? They don't need all of this.

Need. They don't need All of this. To do that, all they need to do is sign up with their college email, a profile screen possibly with like their picture and their name so you can find them on campus. And then show the stuff that's for sale. You can maybe add categories, which isn't too hard. And then let the email let the buyer and seller email each other.

So if they like something that's on the item listing screen, you can click on it, email the seller, then they can meet you on campus to buy it, maybe you can share it on social media to help with hashtag you know, you pen or whatever. So, if you can do this, if you can just build this very simple need list, then you can validate that the people on campus actually want to use this product. Then based on the use after getting a couple sales, you can start adding features one by one