We should be careful drwaing conclusions about the value of practice here. The main problem with this endeavor is the definition of success. The outcome is str

We should be careful drwaing conclusions about the value of practice here. The main problem with this endeavor is the definition of success. The outcome is strictly binary. That is either he makes a pro tour or not. Apart from publicity, there is not a whole lot that can be redeemed if Dan gets, say, only 90% there. There are numerous ways one can challenge himself or herself and benefit enormously along the way to the top 6% in the respective field. For example, if it were finance, then he would have been very wealthy. If it were triathlon, then he'd be in great physical health. Etc. In real life going for it is not the only thing that leads to success. It's also choosing wisely what you do.