In a podcast taped in June, Sparkline Capital's Kai Wu spoke with NYU Professor Aswath Damodaran about SpaceX and how to value such a company. While they focused on SpaceX, I thought Damodaran had some great quotes that spoke to the challenges of valuing any company. "'That's a lot of assumptions you're making.' In theory, a company is worth the present value of all its future cash flows. "If your reaction as you look at my story and valuation is, 'That's a lot of assumptions you're making.'