"There are no known complex organisms from other epochs that could throw long-range weapons they had fashioned. It allowed our ancestors to kill animals without touching them or they themselves being touched. To kill something, other organisms must catch them with their feet, claws, or teeth. Spiders could be considered an exception because of catching prey with webs. However, they still must kill their prey manually. The necessity of dispatching prey at close quarters levels the predator-prey playing field. The inability of any other known organism to throw was likely pivotal in providing relatively stable ecosystems for millions of years, before humans developed the throwing ability, only interrupted by geological or astrological events. While at first it was throwing rocks and spears, over the millennia we’ve gradually learned how to separate ourselves further and further from both predators and prey. The first improvement was the atlatl, or woomera, an implement allowing more energy and greater velocity to be applied to the throwing of a spear. The throwing arm together with the atlatl acts to increase the length of a lever. The premise is the same with fishing poles. Although challenging, it is possible to catch fish simply by hand-throwing a fishing line with a lure or bait. Native fishermen have been doing it for decades. However, much more line speed and distance can be attained using a fishing rod because it increases the length of the lever. Or look no further than your local park: ball throwers with those relatively new but already ubiquitous plastic grabbing sticks use the exact same principle for tossing balls for dogs to retrieve. The atlatl is believed to have been in use by early hominids in some parts of the world 30,000 years ago. The next significant step in weaponry was the bow and arrow. The oldest known evidence of arrows comes from the Sibudu Cave in South Africa. The bone-and-stone arrowheads found there are approximately 60,000–70,000 years old. Despite the early time frame, archery doesn’t appear to have been in widespread use until after the planet had lost most of its large mammals. The bow was an important weapon for both hunting and warfare from about 8,000 years ago to the mid-17th century. Bow-and-arrow use was almost certainly contributory to the uptick in animal and bird extinctions during that time frame. More recently, guns, bombs, and weaponized drones kill with limited or no interaction between the aggressor and victim. Humans have essentially turned killing into an enhanced video game."