Let’s say that a page has 23 legitimate links on it and one that seems to advertise kiddie porn. Have you never hit the incorrect link to a legitimate site? I have. Further, I have hit links to sites that seemed to propose one thing, and found myself located on a site offering up something entirely different.
I have also clicked on a photo on google that seemed tame and wound up on a very vulgar hard core porn site.
Over the years I have found myself on what appeared to be a kiddie porn site at least once. When I realized what the site seemed to be all about, I documented it and notified the local office of the FBI.
In the scenario played out in this sting, I would have been guilty of a felony for such an error, and would have to spend time in prison as well as register as a sex offender.
This may sound reasoned to you, because you think only people looking for kiddie porn wind up on those sites, but that is a totally false premise.
For the record, I don’t frequent hard porn sites or sites that reveal more than you would see at the beach.
It does bother me that when I put in some reasoned searches for non-sexual materials, I frequently run into some very vulgar materials on Google. I could change my setting, but I want to see what any kid frequenting Google would see if they were looking for educational or research materials, to keep tabs on what is going on out there.
Again, go to Professor Volokh’s blog. He explains how the program has safeguards built into it in order to prevent your hypothetical from happening.