That's entirely variable

WHAT

Industrial techniques and the like advance over time as long as you have an industry to begin with

It's so simple, do countries produce goods at differing opportunity costs? Yes or no?

Mate I think you should stop digging yourself a hole here

https://www.youtube.com/watch?v=YboSszwySzU

Just watch this

Not inherently. There's only certain commodities which actually have an inherently differing opportunity cost depending on the country
Fracking is more costly than extracting in Saudi Arabia for example. Fields differ inherently in what climates they are in, how fertile they are etc.
Factories almost entirely depend on technical expertise or cheap labour

The advantage free trade offers you is that you get immediate gratification by getting stuff cheaper

I have to keep re-reading what you're saying because I must be missing something.

So what's wrong with the law or free trade again?

Because it has a short time horizon

It's advantage is in you saving a few bucks now

But putting aside economic development

With few exception where foreing investment makes up for it like Singapore

It's immediate gratification

I am incredibly confused

https://en.wikipedia.org/wiki/Import_substitution_industrialization

Basically my views are similiar to this

I don't like the leftis shit

But it's the policy under which most countries industrialized

Right

It's not a panacea either though

So you want less net supply of goods in the world and worse material conditions?

You can still fuck up like Argentina

I know what you want, I want an argument for it

I'm willing to put up with higher costs of goods now if that allows my economy to develop in the long term

You see the link between those to things

I do not understand

Decreased costs means increased capital accumulation

meaning more investment expenditure

increased roundaboutness of production

and therefore more supply over the long run

and better supply

Not what actually happens. As you save money from cheap imports you receive lesser wages, capital moves abroad etc.

How does increased costs do that without hindering standards of liviing?

"As you save money from cheap imports you receive lesser wages"

What the fuck

How

You increase the net quantity of capital and supply and therefore increase wages as each worker increases in marginal value

You get cheap imports because people in your countries are losing work in favour of a country with cheaper labour costs