alt Hacker News> the example I found that illustrated this best was "Hey there's a warehouse full of valuables let's go rob it" isn't entrapment
Literally entrapment.
Like you said, it hinges on if you would have committed the crime without encouragement from the police.
A trap car is not entrapment. You walking past a trap car, checking if the door is unlocked and then going for a joyride / stealing it means you convinced yourself to do this crime.
An undercover policeman telling you he's seen an unlocked car, and "just take it for a spin, for the hell of it"? That's entrapment.
https://en.wikipedia.org/wiki/Hampton_v._United_States
>By a 5–3 margin, the Court upheld the conviction of a Missouri man for selling heroin even though all the drug sold was supplied to him, he claimed, by a Drug Enforcement Administration informant who had, in turn, gotten it from the DEA. The majority held that the record showed Hampton was predisposed to sell drugs no matter his source...The case came before the court when the defendant argued that while he was predisposed, it was irrelevant since the government's possible role as sole supplier in the case constituted the sort of "outrageous government conduct" that Justice William Rehnquist had speculated could lead to the reversal of a conviction in the court's last entrapment case, United States v. Russell.[2] Rehnquist was not impressed and rejected the argument in his majority opinion.
Here's one where the government said "Hey you should sell this heroin that I gave you" and the conviction was upheld because "the record showed Hampton was predisposed to sell drugs no matter his source." So no, the simple act of an undercover cop asking you if you'd like to commit a crime isn't entrapment on its face.