Lets not get anal about the IQ fallacy we know what white subhumans and non white (redundant word removed) do to the averages of every european country. But we are talking about inventions per capita. Observable class of the people whom come from their heritage. 
You may be thinking about german intellect but you have to admit the swiss, english and dutch are slightly more classy. And they are all 'germanic-celts' of different sorts. Lets look at finland aswell. A nordic-germanic-slavic country that possesses the highest average IQ in europe. We know that the IQ fallacy is not 100% valid (filthy immigration and ignorance the scewing done from the irelevant lower classes in these countries being wrongfully counted in the data as members of the pure ethnic tribe.) But if the IQ is high enough it ticks the box to make it on the list.

My theory:
There is an optimum amount of purity, too much purity is inbreeding. Too little is what you get when u mix northeast-asians with niggers... you get an abomination (niggers with anything really). Celts and germanics are very very similar. Come from the same bloodline but seperated for like 1500 years. So mixing between those two bloodlines provides minimal risk of gene overlap causing mutation, and isnt racemixing either.
This post is not a german hate thread. Germans/Danes/Swedes are the highest IQ pure europeans.