Evidence Performed by Leonardo da Vinci

A massive, strategic state project intended to cast a 24-foot bronze equestrian monument honoring the Duke of Milan's father. Leonardo's project management vulnerabilities created an immediate bottleneck; he spent years shifting between horse anatomical studies and complex metallurgical calculation models rather than initiating production.

While he successfully coordinated construction activities to deliver a stunning full-scale clay model, his prolonged timeline proved fatal to the project. The delayed schedule pushed the casting window directly into a geopolitical crisis, allowing the French invasion to occur before the pour, which resulted in his 75 tons of accumulated bronze being seized for weapon manufacturing and the model being destroyed.