Trains and telecommunications are auxiliary; you walk to the train station and you talk into your phone. For breastfeeding it would be akin to using technology

Trains and telecommunications are auxiliary; you walk to the train station and you talk into your phone. For breastfeeding it would be akin to using technology to aid the process, e.g. breast pump, refrigeration. Allergies are likely an example of our ever evolving physical world, within a few generations the developed world has gone from days spent toiling in the fields to the sterile existence of modern cities, moving from one air filtered compartment to the next.