Mumbai: Elon Musk has just crossed a milestone that once seemed unimaginable. With SpaceX's debut in the capital markets unlocking unprecedented value, Musk has become the world's first trillionaire. Predictably, the world is focused on the number. A trillion dollars is the kind of figure that commands headlines, sparks debate and captures global attention.However, Anand Mahindra, chairman, Mahindra Group, believes the real story lies beyond the valuation.Reflecting on Musk's achievement, the Mahindra Group Chairman shared a perspective with ET that cuts through the excitement surrounding the milestone.Also read: Uday Kotak questions SpaceX valuation, says only time will tell if we're in ‘mega bubble'"I reached out to Elon in 2018 because innovators are often judged in their toughest moments, not their finest hours. What impressed me then was his resilience. The headlines today are about a trillion-dollar milestone. The real story is that he never stopped believing that today's impossibility could become tomorrow's reality."It's a reminder that extraordinary success is often judged in retrospect, while extraordinary conviction is tested in real time.Mahindra's reference was to a period in 2018 when Musk was facing intense scrutiny. Tesla was battling production challenges, critics were questioning its future, and confidence in Musk's vision was far from universal.At that moment, Mahindra publicly posted a message of encouragement: "Hang in there @elonmusk. Your factory is now humming at a brisk clip. The world needs inspirational innovators like you..."Also read: Retail investors build big dreams on small slices of SpaceXFew may have paid attention to that message then. Fewer still would have imagined that the entrepreneur facing such intense pressure would one day become the world's first trillionaire.History remembers breakthroughs. It often forgets the periods when those breakthroughs appeared improbable, even impossible.