The Sports Gene already reduced my confidence in Ericsson's studies in particular. They were not very extensive and there was effectively no control group. An important thing to remember, though, is that these things are really, really hard to study. The meta-analysis is likely to be negative information in how accurate it is. "deliberate practice" is not a valid term, you can create a whole new field to figure out w…
But what happens when you take this all the way? Is there anything you can think of that does not ultimately fall under the "cause and effect" clause? If not, then this makes everything, from sports competitions to "life" competitions, expectations and hopes just a big joke, a reality where "God favours the lucky". The reason you could post your reply is that the conditions (your intelligence, experience, interests, mood etc. etc.) were such that this is what happened, in exactly the same way as how cause and effect resulted in these words being typed back.
It starts with a simple question of whether or not "practice makes perfect", but the followup questions of "nature vs. nurture", "can't vs. won't", "free will vs. determinism", "mind vs. matter", etc. are quick to follow. All of them I believe to be a misguided perspective on reality, but one which I admittedly am part of.