100:00:20,600 --> 00:00:23,138<i>In the ancient world,people placed heavy stones</i>200:00:23,311 --> 00:00:25,269<i>on the graves of their dead</i>300:00:25,439 --> 00:00:29,023<i>so their souls would not wanderand afflict the living.</i>400:00:30,654 --> 00:00:35,613<i>I always thought this was simply the practice