Picture this. The designer on your team has spent the last week whipping up lo-fi wireframes that highlight solutions to the user and business problems you're trying to solve. She's worked through all the interactions. Then she presents to the rest of the team. But she flounders, stumbling over her words. Everyone has a deer-in-the-headlights look on their faces. She's lost them. And it ends with the dreaded four words, "what do you think?"