There are two groups of people that are aiming to enter the UK - asylum seekers and economic migrants. Asylum seekers - nothing changes, they want to get caught. Economic migrants might well be sent back so they don't want to get caught. At present people smugglers have two choices - via the ferry or tunnel or via dinghies. Both are fairly easy to monitor, the former involves checks at the departure points in France (two main points plus container ports), the latter usually aim for either St Margaret's Bay area or the Romney coast - Dymchurch to Dungeness (advantage sparsely populated, disadvantage - longer), which is now more tightly patrolled. The smugglers will be looking for any opportunity and I would have thought it inevitable that they will try just to see if it is a weak link. It may prove to be a cul-de-sac, but worth taking a risk. Many European economic migrants may find it rather easier, and safer, to enter Ireland then slip across the border.
It is inevitable that an open ROI / NI border will result in people smuggling through that route. Some people assume that Ireland's distance from the European mainland will prove too much of a barrier, but as has been seen time and again in the Mediterranean sea, traffickers will use any means possible to put their victims (I call them this because they are in effect victims of crime) into little dingys in the middle of the sea. So what would stop them simply sailing around to international waters around Ireland, then drop them off to make their way to the coast and be moved swiftly from there into Northern Ireland? So sooner or later in the case of a no deal, the issue of a hard border will have to be tackled. And when it is, expect sectarian violence to rise very quickly.
Ministers are parroting the Dominic Cummings line that Parliament can't stop no deal going through, and the government is refusing even to talk to the EU so no other outcome seems possible. Explaining why he came to this view by an amazing coincidence just when he would otherwise have lost his ministerial limo, Matt Hancock had the
sheer bloody gall to say:
(
https://www.bbc.co.uk/news/uk-politics-49234603)
Shame they seem determined by hook or by crook to deny the rest of us that opportunity.
The current cabinet is now effectively form a lame duck government. Its not really visible yet due to the summer recess, but once the House is back in session expect to see them flounder and fail as the deadline approaches, and no confidence votes to be called for. With a working majority of just one, it is inevitable that there will be at least a couple of defections from their side of the House. Normally I would be looking forward to this cluster-you-know-what of a government to crumble & a General Election be called. But the opposition are simply incapable of forming a new, effective, majority government and so an election would simply lead to an even more hung, and therefore dysfunctional House. The only possible upside of that would be that it would be vulnerable to legal challenges about leaving with no deal without Parliamentary consent.
Personally I am now holding out for a Zefram Cochrane moment!
(For those unaware of this fictional character, he was a central one in the Star Trek film 'First Contact', where humanity first meets an alien race of superior intelligence and logic)