How can a diving board illustrate the newton's thrid law

*Just to explain, Newton's Third Law, which is also commonly called the "Law of Action and Reaction" states that force come in pairs, meaning that, for example, if I were to push against the wall, thus exerting a force on the wall, Newton theorizes that the wall exerts a force of equal magnitude right back onto me. *This is thought of more practically when you think of the effects of these forces: I push against the wall, but the wall doesn't move, so the wall is thus pushing back onto me, preventing me from going straight through this wall. *If I were to push onto, say, a sheet of aluminum foil, it would obviously break, but not because it is not exerting a force back, but because the aluminum foil is not strong enough to match my force, so it allows me to go straight through it mostly.