If you are injured in a slip and fall accident, you should be aware that one of the common defenses of the property owner is the 'Open and Obvious' doctrine. This defense argues that the defendant should be shielded from liability because the dangerous condition which caused you to slip and fall was reasonably obvious. According to California law, there is not a duty to warn of an obviously unsafe condition. Whether a dangerous condition is deemed to be 'open and obvious' is determined based on the 'reasonable person' standard.