The theme from the previous night was exotic plants. All that was mentioned were brought in for agricultural purposes. The invasion is because of poor mismanagement. And then things like cutting down a wattle wind break brings in other factors, like bare ground which leads to erosion. And poisons are also used in the mismanagement of the exotic plants.
Chilli was a major factor in pest remedies, including making a paste which was painted onto vegetables to keep baboons away. The seed is where the concentration of the “heat” of a chili comes from and this is to prevent pests from eating the seeds. Chilli has a purging and cleansing element – definitely a medicinal plant.
John brings up the relationship between humans and animals because there is a lot more to it than meets the eye.