any questions all right then let's get started so why might we care about probability in robotics well often the state of the robot and the state of its environment are unknown and only noisy sensors are available so we don't have a sensor that just says here is the state instead you measure something else probability provides a framework to fuse that sensor information to a reasonable estimate of what the state might be and so the result of what we would compute would be a distribution over possible states that the environment and robot