The spear is a simple carbon-based pike. It can be printed for a relatively cheap price and is therefore among the easiest ways to defend oneself from hostile creatures on an unknown world. The spear can be used as both a melee weapon and a ranged weapon. However, once thrown, the spear must be retrieved before it can be used again. A spear is not a toy.
The spear, like many of the survival items contained in the simulation's catalogues, was designed in the 3160's for soldiers who may encounter desperate situations during the Nacho Wars. Since this time, no superior designs for a spear have been developed. Likewise, spear designs (in general) have changed very little since the the enchanted period.