Today that's clearly not the situation with food in every corner shop, but the behaviour is still ingrained in our genes and we can't shake it off easily. If we take the example of hard-workers who may contest that they are not lazy, the fundamental reason for their effort to climb up the career ladder is money which equates to being able to purchase our core needs (water, food, sex, shelter and protection against danger), so perhaps being a career-person is the laziest choice for attaining those essentials (rather than say building a house for yourself, digging a well to get water or hunting a caribou for hours). (methodsandtools.com)