Load distribution is one adaption to the force of gravity.
A simple arc is able to withstand greater pressure and weight than a plane of the same material because of load distribution. The concept of load distribution emerged in many different forms among aboriginal people. The tump distributed the weight of the pack across the head of the carrier in addition to the shoulders, back and legs. With a tump, the carrier could comfortably carry a large load and increase the size of the load. Aboriginal people developed and designed several types of snowshoes.