I am using Mark Butcher as an example - he wanted to play for England, to have a long career and recognised that his technique wasn't up to it so he started from first principles of batting and changed.
A bit like Nick Faldo did.
Does it have to be Alan Butcher - clearly not - I use him as an example. Any individual has to find a coach that will work for them that they will trust and who has the right skills and ability to teach them to go that extra mile.
Hang on, Buzz - have you seen much of Ballance this winter? He's been on tour with a host of coaches, yet you seem confident he hasn't been working on his technique?
If he has changed, brilliant, he clearly has the latent talent to play international cricket successfully.