People make mistakes all the time: forgetting where they left their glasses, locking their keys in their car, missing the bus or train.
But what happens, when a simple mistake ends with the person breaking the law?
This is the key question in the case of Kerry Kennedy, on trial for driving while intoxicated (DWI).
Kennedy, the daughter of Robert Kennedy and niece of former president John F. Kennedy, has been charged with misdemeanor DWI. According to CNN, Kennedy was swerving between lanes, eventually striking a tractor-trailer.