no niceguy2 thats totally incorrect.
I haven't said that encourage being average, I encourage hard work, dedication and commitment which in turn makes you perform to best of your ability.
What I've said is that I encourage my DC to pick careers which they believe will fulfil them and where they will find enjoyment, not where they earn the most. I don't think there is anything wrong with saying you can be a nursery worker or primary school teacher if thats what makes you happy as long as long as you are also saying that they can become and astronaut or attempt world domination if that is what makes them happy. When people are talking about Oxbridge, or competition for jobs from China, they are talking about a certain kind of career.
If being average is what makes my DC happy then yes I'm happy for them to be average, it took me some time to come to that conclusion but I do believe it. I'm someone who agrees with your idea that its the results where it really counts but thats only if having those good results will get you what you want. What is so wrong with being someone who works in a job you love, has a great family and great social relationships, and enjoys your life but could also be grouped into the 'average' category in regards to net value. I use the phrase "you are the architect of your own future" all the time at home and that is my main belief, find what you like, even if its emptying the bins, work at it and be happy don't just 'get money'.
I feel really strongly that some people get too caught up in a particular idea of success. An old neighbour had been to Cambridge, she was earning a middleish wage in a job she didn't like thanks to a degree in a subject she had never really loved, she had married a builder with zero qualifications who's business paid for all the things she did love; expensive home, lots of travel, a horse. Having much revered qualifications doesn't equal success you can do just as well if not better without them. A large percentage of the worlds weathiest and most original never started or finished their degrees; Mark Zuckerberg, Jamal Edwards, Bill Gates.
Also I have to say your disregard for music, arts and sport totally baffles me. The reason I and the majority of my contemporaries are in the top 5% of earnings is through our work in those three areas.