Um...

...you're an idiot, professor:

A Canadian researcher said he had to cancel a pornography study because he could not find any adult men who had never viewed sexually explicit material.

Professor Simon Louis Lajeunesse of the University of Montreal said he had to drastically alter his study on how pornography impacts the sexuality of men due to the limitations he discovered in finding volunteers, The Sun (Britain) reported Wednesday.

You might as well spend your money on time travel, seeing as how pretty much every man EVAR since the invention of photography has seen sexually explicit material.