Fallout: New Vegas Traits

General information
Traits modify different aspects of gameplay, including (but not limited to): Primary statistics, derived statistics and skills. With the exception of Wild Wasteland, traits yield one or more benefits, plus an equal number of (offsetting) detriments.

Traits are optional; the player may select up to two (or none at all) during character creation.

Fast Shot and Trigger Discipline should not be selected together as due to the way the system calculates the stat decreases you will end up with a net loss of 6% in both shot accuracy and fire speed.

Note that the Four Eyes trait description during selection is somewhat deceptive as it actually reduces your base perception by 1 and adds a +2 perception status effect when eye-wear is equipped. This is important if you want to select certain perks with perception requirements (such as Sniper or Better Criticals) as they may be unavailable unless your base perception is increased by an additional point to negate the loss.

Picking the Wild Wasteland trait is the only way to obtain the Alien Blaster. But it comes at a cost, the enemy carrying it will replace the Mercenary carrying the unique Guass Rifle YCS/186. The Alien Blaster is more powerful, but has limited ammo, making the YCS/186 a better long term weapon, this is most likely the offsetting variable for Wild Wasteland.