Hang on, I'm confused here. I thought Brexit was all about free trade, but you make it sound as though you would rather we be self-sufficient. Does free trade only benefit us when we sell rather than buy?
I refer to economist Henry Martyn, who said a few hundred years ago a few things about globalisation. He used the analogy of technological innovation to make his point, and suggested that by using a tool (a sawmill in his case), we could perform the work of 30 men with the labour of two men.
Now of course, we could employ those 30 men instead, but that would be a waste of human resources. The same is true for most technologies, and hopefully readers of this blog would agree that we shouldn’t go back on technological development.
Martyn went on to compare this with globalisation, and suggested that if another country can produce textiles (for instance) more efficiently than we can, then it is akin to having a new technology to do likewise, and we should jump at such an opportunity and instead deploy our resources to trade with that nation in areas that we can excel.
That is, assuming that we're going down this path as a peon to free trade rather than protectionism.