On her way to becoming a June bride, many a young lass was favored by her lover who, upon finding an appropriate tree, used its trunk as a canvas on which to carve their initials inside a heart (replaced today by a text message and a photoshopped emoji). That the familiar heart shape looks nothing like a human heart is obvious to anyone who's ever taken high school biology. But why? In Episode 57, Out Of My Mind podcast host Jay Douglas tackles 2500 years of history to find the mistake that led to a shape that has no connection to reality.
