For example, if the claimant had to exit a grocery store, and there was a sign warning of a wet floor by the exit, it is not usually a defence to say that the claimant knew of the risk of the wet floor, if the claimant had no other way to leave the store, and thus had to walk across the slippery surface in any event.
For example, if someone has to leave a grocery store and there's a sign warning of a wet floor near the exit, it is not usually a valid defense to say they knew about the risk of slipping on the wet floor because they had no other way out and were forced to walk across the slippery surface.