Merry Go Round

In our neighborhood park there is a small merry-go-round which runs when pushed manually. Once a mother was seen pushing it while several kids enjoyed the ride. But she was holding the ride and also running round and round as the ride moved. I wondered why could not she stand at one place and simply push the ride to get it running! Why take the pains to run along with it? On second thoughts I could get it - She was not moving with the ride but in fact she was moving with her kid! If she stood at one place and pushed the ride, she would need to let her kid go out of her hands which she did not want to do... Tells how difficult it is to judge others from our own frame of reference. Also how parents take emotional decisions to protect kids while kids can judge them logically and consider them wrong...