The document discusses evidence-based entrepreneurship and investment readiness levels (IRL). It presents the Lean Startup methodology, customer development, business model canvas, agile engineering and hypotheses testing as part of the evidence-based methodology. It discusses how IRL can assess project maturity similar to NASA's technology readiness levels (TRL) by focusing on data from experiments and customer interviews. Several examples are presented of teams applying this methodology in NSF programs to validate hypotheses, the business model and determine IRL.