The hard part of economics, politics and public policy is deciding where to draw the line. It's as easy as pie to take a position at one extreme or the other. To buy the whole Liberal or Labor package - which, after a change of government, will often involve supporting things you opposed six months ago. To oppose virtually all government regulation or to think more regulation is never enough. Doing it this way always feels good - so neat and tidy.

But though it's easy and neat, it's not satisfactory. It's pretending the world is either black or white when in fact it's a quite unsatisfying shade of grey. To say I agree with the Libs on this and that, but with Labor on that and the other. To accept that some regulation is good, but too much is bad. It takes more effort, leaves you under attack from both sides, and it's messy.

Illustration: Kerrie Leishman

It involves doing your own thinking, which is hard work. I've been thinking lately that, while I want very much to live in a market economy, I definitely don't want to live in a market society.

In a market economy, you and I are pretty much free to make our own decisions about what we'll consume, what occupation we choose and where we'll work - all within the limits of what's available, of course - while the great majority of decisions about the goods and services - and jobs - we're offered are made by private businesses.