We hire people to grow our food because it is a better optimisation of labour, not because we can just forget about the process of growing food. We need to be aware of things like: is this food processing sanitary, is the farm run by ethics that we agree with, is the environmental impact acceptable, is this food then best thing to grow in this environment (eg: growing cotton and rice in the desert makes no sense at all).

We then exercise choice by hiring people who best match our criteria.

When the only criteria we filter by is cost, we throw everything else out the window: ethics, ecological sustainability, economic viability, morality, food safety: everything.