Logan's Loophole

"No one's going to put you out to pasture' cause you're going to stay young (and level 30) forever! You'll never again become addicted to chems, and they'll last twice as long... but after 30 you can kiss experience, perks, and skill points goodbye!"

- Fallout:New Vegas description

Logan's Loophole is a trait in the Fallout: New Vegas add-on Old World Blues.

Effect
Chems last twice as long and you never become addicted, but as a penalty your character level will be capped at 30.

Behind the scenes

 * This trait is a reference to the 1976 movie "Logan's Run", based on the 1967 post-apocalyptic dystopian novel of the same name. The novel depicts a society which euthanizes individuals who reach their 21st birthday. The movie has a similar concept, but the age of termination is 30, which is the same as the level cap of the trait. The look of the Vault Boy and the symbol on his hand are both reminiscent of Logan's outfit and life clock from the movie.