>>First, it's not an erroneous belief - it's true much more often than it's not true.

So you've completely discounted the Amazon url I provided.

>>My experiences and experiences of many people I know will justify that.

Your experiences and experiences of many people you know are called "anecdote". You are saying "the results of my behavior are best because that's all I can see".

>>Versatility means being able to do many different things - it has prerequisites (planning and creating options) and it also has benefits (leads to more opportunities). Connect the dots...

Versatility is a very recent introduction to this exchange. Your post was not "he with the most skills wins" or "he who is most versatile wins". and you accuse others of diverting.