The presentation focuses on establishing credible calculations in product design at Decathlon. The presentation outlined Decathlon's journey from its inception in 1976, aiming to democratize sports, to its evolution into a company with both retail stores and design centers, highlighting key aspects of product excellence and innovation.

Decathlon's design and calculation process involve multiple departments like designers, product engineers, and quality engineers across various product lines. The presentation emphasized the importance of cross-departmental services like testing laboratories, design (CAD), calculation services, and software programming. The core mission of the Calculation Team is to establish a strong link between calculation and testing, disseminate knowledge across sports departments, leverage data for innovation, and optimize sustainable products. The process spans from understanding sports use, developing new modeling techniques, to the final product release, utilizing tools like configuration software and physical development tests.

Key to their approach is rendering calculations credible. This involves convincing specialists about the predictive capability of calculations and inspiring non-specialists about the benefits of simulation in terms of return on investment, innovation, and time savings. The credibility sought depends on the audience and purpose of the simulation, focusing on project value addition (like reduced study time, material savings, reduced market launch time, environmental impact, and improvement in product quality) and enhancement of cross-project knowledge and competencies.

Decathlon also places importance on the maturity of simulation, categorizing it into various levels based on reliability and predictability. This involves establishing confidence indicators and targeting an overall maturity level that aligns with project objectives, ultimately aiming for a 'Virtual Lab' scenario.

To render calculations credible, Decathlon has implemented a decision/prioritization matrix in the early stages of calculation. This includes typical specifications and prioritization filters based on cost, safety, environmental impact, and innovation. They also employ maturity and profitability indicators for sports calculations and strategies for creating and prioritizing Virtual Labs. Additionally, they create explanatory videos to demystify the simulation process for a wider audience.