Yes I am French and I am arrogant only when I am talking subjects that I know I master and against people like you who are ahead of themselves, arrogance is the only healthy attitude in those particular circumstances.

But my arrogance is dwarfed by your delusion of grandeur. You think you know everything even in domains where you are not an expert. The idea that people can know more than you on a subject seems a completely crazy idea to you. You approach every debate with a judgmental and closed mentality where you think you are qualify to asses the IQ of people even if most of the time you don't even comprehend what they are saying.

Your delusion of grandeur and low empathy skills prevent you from incorporating feedback, cause your errors to persist over time and you conduct you to repeat false things with overconfidence. You are you own enemy.
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Now lets read together an article of Szabo on this subject:
http://unenumerated.blogspot.fr/2013/11/european-asian-divergence-predates.html

"Many of the economically important innovations in northwestern Europe long predate not only the industrial revolution, but also the Black Death ("

He says that innovations that lead to the Great Divergence (the rise of the West) predate the Black Death. Which is pretty much what I am saying.

"1) heavy dairying

(2) Co-evolution of human lactase persistence and cow milk proteins

(2) delayed marriage

(3) hay

(4) greater use of draft animals

These innovations all long predate the Black Death"

He says it again.

"Higher labor productivity implies higher per capita income"
Exactly what I have written two time already. I will re-quote myself because it's the only thing to do with people who people overlook your wisdom because they think you are dumb:  "Real wage are 100% determined by the labor productivity"

"these seem not to have had an anti-Malthusian effect in increasing labor productivity "
He says that the West had start to escape the Malthusian trap before the Black Death because of these innovations.

"the increased efficiency of rice in converting solar power to consumable calories, for example, simply led to a greater population rather than a sustained increase in per capita income."
He says that the East failed to escape the Malthusian trap. He seems to wrongly attribute the cause of this to the rice cultivation, when a more robust explanation is a lack of creativity.
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So according to Szabo innovations, and therefore the labor productivity, and therefore real wages, were higher in the West before the Black Death.

It's undermine your thesis (high real wages in Europe were not caused by the mortality caused by the plague, but were caused by the innovations which predate the Black Death) and sustain mine (high real wages were caused by the West greater creativity, ie an internal factor whose origin can be found in its culture, not an external factor like the plague).