Figure 7-19. Key components behind the scenes of our solution You need to keep your team honest about the logistics behind your prototype concept. If this is the simulated digital solution of your interface, are you hyperaware of all the things that need to make it work behind the scenes? Moreover, are those things feasible and sustainable? In the case of TradeYa, obviously our concierge model was not sustainable. If we wanted to scale, we couldn’t rely on Jared personally facilitating each and every transaction. He couldn’t hand-hold every new user through the anxiety of making their first successful trade. So, we had to come up with a better option. (More on that in Chapter 9.) In the case of Bita and Ena, before they showed their prototype to real users,