Lie detector.

It should be 99.9-100% accurate.  It will be a very revolutionary tool
in sex cases which are mainly her word against his:

http://www.americanfreepress.net/Censored/30_New_Infallible_Lie_Detecto.htm

     Science will put an end to that controversy.

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     If it turns out that 12% of men aged 20-40 are rapists as Koss
study claims, should we build prisons for 2,400,000 new inmates?  Many
robberies are also not convicted with modern resources.  Should we add
600,000 more places for that as well?

     What do you think of castration from medical point of view?