“Prototype or the commercial product actually going from Prototypes to commercial product is very different. You know prototypes They can have a lot of bugs and be unstable. But when you develop also for us I think we focused a lot of technology but not so much on making it easy to use. And for teachers The prototypes are pretty hard to to use. But when we started as a company developing the product then Usability and make it easy to use and the use experience was super important as well as making it you know accessible.”