Felienne Hermans, an Assistant Professor at Delft University of Technology, emphasizes the importance of spreadsheets in decision-making processes within companies. She argues that people often overlook the power of spreadsheets due to their widespread use and lack of visibility. Hermans shares her research on spreadsheets as code, highlighting three key reasons why they should be considered programming languages: (1) spreadsheet formulas are used for similar problems as source code; (2) spreadsheets can be just as powerful as other programming languages; and (3) they suffer from typical software engineering problems such as feature envy smells. Hermans proposes applying software engineering methods to improve spreadsheets, including modeling spreadsheet data for a database, detecting code smells, and graphing spreadsheet data using Neo4j. She concludes that spreadsheets are not just data but actual pieces of programming that run the world, and her research aims to build an IDE for spreadsheets.