Thankfully, most of them are pathetic losers. In Japan, they
  have a special name for men like that and they're seen as
  pitiful beings, sad and lonely, and I suspect that's true. But
  even if the percentage of predatory ones is small, they're out
  there. What pisses me off is that they make ALL MEN look bad. If
  I ran a police force, I'd hire people like you who know how to
  identify them at a glance to at least tip off the authorities to
  take a closer look. If they're harmless? They're harmless. But
  if they're not, maybe they can get some sort of intervention and
  assistance so that they never offend. === I don't know. That's
  where it's tough. There's people all around the world trying out
  different solutions but I don't think any of them have the
  perfect answer. There's organizations that have been working on
  fixing this for longer than either of us have been alive and
  they don't have the answers either. Now some of them would be
  easy to spot. If someone is collecting pictures of boy's bare
  feet, well, there's a good chance that's somebody who might be a
  future problem. Yet, if they're not doing anything wrong besides
  that, they can't be prosecuted for anything. Never understood
  the foot thing. But identification gets harder if they get more
  clever. In behavior, there's not much difference between being a
  person helping kids out with an honest purpose and a person who
  is building their trust for the purpose of having illicit
  encounters. Same words. Same contact until they cross over that
  line. Yet, if all men were banned from working with kids, a lot
  of good will never happen. Kids need male role models, mentors,
  teachers and guides in their lives. Women can do a great job,
  but some things require a unique perspective and style. So, I
  don't know. I guess the best that can be done is teaching
  skepticism. It's good to trust people but know when to be
  skeptical of them as well. Teach good "bullshit spotting" to
  kids. i don't think it helps to try to teach kids to not talk to
  all strangers: that doesn't work. But what *can* be taught is a
  "sense of awkward" and give them the ability to handle
  themselves in potentially very awkward situations if they find
  themselves there. There's not always trusted adults around to
  turn to. In your case, can you think what you might have done
  differently? Do you have any advice you could give your younger
  self that would have improved things for you? Is there advice
  you could give your younger self that he would have listened to?