Yeah! [sarcasm]... I wonder
if the 'doubter', whoever he or she is, is willing to lay his own money down on his opinion[s]?

Doubter?...If you can GUARANTEE to me that valuable science will come from the ISS, worth the money invested in it,
I'll pay you 1000 dollars [US].
The key word is G-U-A-R-A-N-T-E-E.

Doubter? If you can show me [scientifically, with equations] that an ICBM or Trident, AS THEY ARE PRESENTLY CONFIGURED, can escape earth's gravity, with a heavy nuclear warhead,
on their way to an asteroid millions of miles away, I'll pay you 500 dollars

I think the 1000 dollars, and 500, are quite safe.

Jacob