Here's why:

* Gravity: Continental glaciers are massive sheets of ice that flow primarily due to the force of gravity. They tend to flow outwards and downwards from their highest point, which is usually at the center of the ice sheet.

* Shape: While the flow can be complex and influenced by factors like the shape of the land beneath the ice, the general direction of flow is typically outwards from the center of the ice sheet.

* Rate of Flow: The rate of flow can vary depending on factors like the thickness of the ice and the slope of the terrain, but the general direction remains consistent.

Therefore, while a continental glacier can have complex internal flow patterns, it doesn't flow in all directions. It predominantly flows outwards and downwards from its central highest point.