What might you do with your infinite series to roughly estimate the NPV in your head without having to write anything down?
Especially when faced with certain tradeoffs, like comparing a $6B hyperloop with an agency with an annual budget of $10B?
Especially when faced with certain tradeoffs, like comparing a $6B hyperloop with an agency with an annual budget of $10B?
Explaining it the other way around, if you had $270 billion now, you could fund the NSA by $10 billion per year in perpetuity based on the interest. That's a simple calculation of $270B x 3.71%.
I'll trade 7 1/2 months of the NSA annual budget for one hyperloop.