So they can foresee something they might say or do and prepare to counteract a statement they might make or do something they planned to do first. A good (and funny) example is in an episode of Parks & Recreation where Leslie Knope announces that she's going to put a wheelchair ramp by every set of stairs in Pawnee but then the other political party campaign announces that they're going to put wheelchair elevators next to every set of stairs in the town.
The heads are part of Olmec civilization of ancient Mesoamerica. The common reason why they made this because of their religious belief.
<u>Explanation:</u>
The Olmecs are famously known for the statues they carved: 20 ton stone heads, quarried and carved to commemorate their rulers. They are the first known civilization in America and the first to have this unique kind of construction.
Like most of the early Mesoamerican cultures, Olmec also believed in three tiers of existence: the physical realm they inhabited, an underworld and a sky realm, home of most of the gods.
