Should you ask about what they want to be, or what they want to do?

Our children will have to continually learn and change as they get older. No job for life, more likely multiple careers.

So if our children will have to change jobs in the future, giving them the impression that jobs are fixed, that what you choose to do is what you will keep doing, isn’t fair.  

So instead of asking what they want to be when they grow up, perhaps it’s better to ask them what they want to spend their time doing.