[vtange]

Except "work twice as much" is a very vague term. Do they work twice as long? Do they have twice the amount of resources? What is the value of their output - is it twice higher than A? For how long do they work "twice as much" before burnout and overwork deaths happen like in Japan?

In Japan it is well-known that a long-hours work culture doesn't translate to actual productive work. People end up being masters of "looking productive" rather than actually being productive.

[superquest]

I'm deliberately being vague for the sake of argument. Of course there are many details in practice.

A similar argument applies to the economies of Europe and the USA in parts the 20th century. A lot was similar, but Americans had the better work ethic.

Of course, work ethic doesn't explain everything. But it's really freaking important.

[watwut]

Which part of 20th century was the same for Europe except work ethics? America did not had two world wars on its soil, that alone will make majority of that century different.

[superquest]

I can't find any evidence from 20th century, but here's a study from 2016: http://ftp.iza.org/dp10179.pdf

It says Americans work 25% more. This is usually the conclusion of this kind of thing.

[watwut]

That is account of worked hours, not that everything except worked hours was same on 20th century - which is what I found suspicious.

I agree that Americans on average spend more time in work.

More conrroversially, I also think that the notion of work ethics should count in also what you do at work and crunch stories about people sleeping under table should not count as better work ethics. E.g. more hours less effectively is not better work ethics. (That is not to imply American companies are less effective per hour, I don't think that is the case.)