The document discusses key performance indicators (KPIs) for measuring innovation. It argues against a "one-size-fits-all" Procrustean KPI system, as financial KPIs alone can stifle innovation. Instead, KPIs should be adapted based on a project or venture's maturity. It presents a classification of innovation accounting KPIs for reporting, governance, and overall performance. Specific KPIs discussed include cost per learning, experimentation velocity, knowledge-to-assumption ratio, and barebones net present value. The document concludes that an innovation accounting system tailored to a venture's stage is necessary for corporate startups to succeed.