system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How can people publicly admit they smoke weed (Miley Cirus, for example) and not get arrested?

This is probably a stupid question, But I honestly can't think of an answer to this one.
gpt
Saying you did something is not evidence.  People lie all the times for many reasons, including to gain popularity.

Physical evidence is needed to make an arrest charge stick and prosecution win.  They'd have to have been caught.