In case of some no-deal scenario, some people wave it away and say that the EU would smooth over the transition and ignore the border.
That is not so. Britain would be thrown into chaos on the food, medicine, air travel and basic shipping level, and I don’t mean “logistical problems” but actual shortages and empty shelves in the stores.
The EU has been telling the UK for two years now that decisions have consequences and no amount of magical thinking can override basic things.