I-Corps is now offered in 100 universities and has trained over 9,500 scientists and engineers; 7,800 in 2,546 teams in I-Corps at NSF (National Science Foundation), 950 participants at I-Corps at NIH in 317 teams, and 580 participants at Energy I-Corps (at the DOE) in 188 teams. For example, students start the class with their own initial guidance – they believe they have an idea for a product or service (Lean LaunchPad/I-Corps) or have been given a clear real-world problem (Hacking for Defense). (The teaching team knows that over the course of the class, students will discover that most of their initial hypotheses are incorrect.)