All modeling fails, because it's worthless until proven otherwise. It's future breakthroughs - JFK speech at Rice, just replace space with nuclear: " Space expe

All modeling fails, because it's worthless until proven otherwise. It's future breakthroughs - JFK speech at Rice, just replace space with nuclear: " Space expenditures will soon rise some more, from 40 cents per person per week to more than 50 cents a week for every man, woman and child in the United Stated, for we have given this program a high national priority--even though I realize that this is in some measure an act of faith and vision, for we do not now know what benefits await us."