"People repeat behaviour that leads to flooding their brains with pleasurable chemicals. The short-term reward loop acts over hours to years, and the long-term reproductive success loop over generations"

This quote by Keith Henson is referring to the concept that individuals are driven to repeat behaviours that make them feel good. This is because when people do something that they delight in, their minds launch chemicals such as dopamine as well as serotonin, that make them really feel enjoyment. This temporary benefit loophole can last for hrs and even years, as well as the long-lasting reproductive success loop can last for generations. This suggests that people are likely to continue to engage in behaviours that make them feel great, as it has been verified to be advantageous for their survival and also the survival of their species. This quote is a reminder that our behaviour is commonly driven by our need for satisfaction, and that this can have a long-term effect on our lives and the lives of those around us.