If this works, it could have an impact similar to the contraceptive pill for women

My personal opinion is that the freedom women now enjoy comes a lot from the humble contraception pill. Indeed, who would have the resources to pursue a career, fight for their rights or have a life of their own if only the men would carry the responsability for sexual protection? The pill allowed women to break the recursive loop, so to say.

Now, men have used condoms for a long time, with various degrees of efficiency, though. Sometimes they break, sometimes mysterious holes appear in them, sometimes they are so annoying they are not used. The search for a contraceptive pill for men is ongoing, but even if some progress was made, it is not yet a usable solution.

Here come James Tsuruta and Paul Dayton with "A Sound Decision", a method which would involve placing your balls into a liquid, zapping them with ultrasound and become sterile for a specified period of time.

Can you imagine the social impact this could have?