Atlatl Equalizer Hypothesis

The atlatl equalizer hypothesis posits that prehistoric male human hunters lost any advantage they may have had over women due to men's strength advantage, on average, over women with the invention of the atlatl. In essence, the invention of the atlatl made hunting by women as efficient as hunting by men. 

The rational in our current society, even many many women who identify as feminists, that men should do the dangerous jobs of fighting in the military as well as  high risk civilian jobs is also based men's strength advantage, on average, over women. This notion is just as wrong and for the same reason. Technology. Pulling a trigger or pushing a button doesn't require much strength. 

In fact, when it comes to shooting women have an advantage over men. In the Olympics, rifle and pistol shooting was mixed gender until the 1984. They were then separated by gender due to women''s inherent advantage in shooting sports because of their, on  average, lower heart rates.  Just like women don't compete against men in the 100 meter dash due to men's advantage in muscle power.