Short Wave Sportfishing wrote:

By comparison, waterboarding is a short term shock technique which
does not leave lasting psychological or physical problems and is
effective 90% of the time - it's efficient and more humane because it,
at the most, lasts less than 5 minutes total. More to the point,
because it is a shock therapy, the information is much more accurate
and in general, does not have to be repeated more than once.

I've read only vague assertions of effectiveness without
corroboration. If it is so benign and effective why were
the video tapes destroyed? They would have been convincing.