I'm all for discussing this and thinking about it, but actually chatting with the person on the other end demonstrates intent.
That would certainly change things—where did you get that data from?
Under debate is whether it is still illegal when the victim of your action does not actually exist as a person.
The UN is not a government.
If they thought they were selling illegal drugs but they were just selling sugar they would be convicted. (In England if you sell sugar as illegal drugs you will be convicted of a drugs offence even if you know you are selling pure sugar).
If I plan to kill my boss, saw him into pieces with a chainsaw, and put the pieces in triple-mylar garbage bags, when I go to the store to buy garbage bags I've crossed the legal threshold.
In many states, if the prosecutor can prove to the jury 1) I planned to kill my boss, saw him into pieces with a chainsaw, and put the pieces into garbage bags, and 2) bought garbage bags, I'm toast and will go away for several years. NB there is nothing wrong with just buying the garbage bags.
Incidentally, this is why you should always get a lawyer before talking to the cops.
It's certainly a crime to plan to murder someone. These guys have gone beyond thinking about it; they have actually planned and tried to execute on the idea. What about that is different than conspiracy to murder?
Now,if these people are being accused of anything more than intent I think it is going too far.
Of course it's not a crime to think about something. But that's not what happened here. The alleged perps propositioned a child for sexual acts. That it happened not to have been an actual, breathing child in the specific instance involving Sweetie is incidental; I'll bet you real money it was every other time...
EDIT: Or do you somehow actually think that for all 1000 people found via this "honeypot", it was the first time they ever thought, "I know what I'll do today! I'll pay a naked 8-year-old to touch herself over the internet!" and that they were just "lucky" enough to get a fake kid their first time out?
If you ask me, however, Bob's propositioning Sweetie creates sufficient Probable Cause to obtain a warrant to search his computer for evidence of other, similar, interactions, with actual children. Then he can be prosecuted for the cases where there was a victim.
That he interacts with a virtual child in an inappropriate way is strongly suggestive that has engaged in that behavior at other times, with other, real children. The issues that cause people to act on their pedophilia tend not to result in isolated incidents, and this has been repeatedly demonstrated by years and years of study of hundreds, if not thousands, of individuals.
If the police find no evidence that he's done this before — whether because he actually hasn't (vanishingly unlikely), or because he's too good at hiding his aberrance — then we may or may not be able to prosecute him, depending on the jurisdiction.
But, for my money, Sweetie isn't per se about prosecution. It's about helping surface individuals that warrant further scrutiny, subject to due process, and then quite possibly prosecution.