<jmattis@attglobal.net> wrote in message
news:1114294198.283286.281150@l41g2000cwc.googlegr oups.com...
> How many foam hits can a shuttle take, before it falls apart on
> re-entry? How much radiation can a person suffer before getting
> cancer?
>
> Define "safely" -- do you want the car to last 50,000 miles; 100,000,
> 200,000, what?
>
> We all take various forms of hits all the time, eventually they catch
> up to you.

If you don't have a clue, why not just say so?