"Many countries (about 167) and many people (about 6.5 billion) manage without being in the EU. Of these many have a better standard of living than we do.
It is possible."
I hate these comments, because it over simplifies a very complex issue.
Ok then Carol, how many of these other 167 countries are as developed as those in the EU? I think for example we an strike off huge parts of Africa and South America from wanting to buy our financial and legal services in the same way that the EU does, or even buying our leading manufactured exports. Their populations with that type of income that would allow enough demand to increase in order to meet the slack incurred by a trade deal that is different to the current one with the EU.
The US takes 15% of our exports at the minute, countries with trade deals with the EU take another 15%, so as the EU takes 44% we can now account for 74% of exports, 59% of which is through the EU. We'd have to negotiate deals with the other countries that make up 26% of our trade.
A deal with China would be good, but at what cost to our own manufacturing base? Oh and the reason the EU doesn't have a trade deal with China is because it doesn't class it as a market economy, the planned nature of the Chinese economy means that it can give its firms advantages that those in democratic nations won't get.
We could do a deal with India, but India is notoriously protectionist so I'm sceptical. South Africa and Brazil are possibilities as are former Aus and NZ, but the vast distances between the UK and these countries, as well as the fact that these countries economies are already aligned with those of other countries means that it would be strategically challenging to increase the level of exports to these places.
See your "168" other countries stuff is a platitude, an argument made by one brexiteer one day that the rest of you thought was good and have kept using.
Except it shows a great lack of understanding about trade and economics.
Oh and your point about living standards? Well using the HDI, and discounting for City states, there are only 4 countries in the world that are not part of the EU or EEA and have a better standard of living. The US, Canada, NZ and Australia.
I wouldn't classify that as "many".