Mark Potter

Economics – the art of educated guesses

The quote in the heading is a well known slogan from Bill Clinton’s campaign strategist James Carville, with the addition of the word ‘it’s’ to what he actually wrote as one of 3 key messages on an office door sign for fellow campaign workers.

I usually recall this quote when reading or hearing economists expounding on the prospects for financial markets by sourcing data and theory from their world. I am a general sceptic of economists, loving the quotation that ‘economists are people who will tell you tomorrow why what they predicted yesterday did NOT happen today’!

I studied some basic economics in my youth and whilst micro economics is a good way of explain aspects to human behaviour, macro economics is more like weather forecasting: immense computer resources are devoted to predicting what will happen in the future, and then a butterfly flaps its wings somewhere in Latin America and it all turns out to be wrong (a premise put forward in an explanation of chaos maths which I once read).

Even ignoring my economist-ism, it is widely understood and very easy to prove that in the near term, investment markets do not in any consistent way perform in line with economies. In some ways, equity and bond markets act as predictors – for example, adjusting in anticipation of prosperous times. At other times, they anticipate recessions, but more often than not a recession has to be proved to be both set in and long term before a raging bull market will correct.

At this very moment, we have august bodies of economists predicting recessions of catastrophic proportions in many global economies, central bankers looking into very empty tool bags and yet many stock markets are at records highs

So is economics useful to investors?

Yes – but not as a basis for deciding what to buy and sell in the short term. We have to remember that the main driver of market prices is supply and demand (some micro economics there) with a good mixing in of human behavioural biases.

Some times and to a greater or lesser extent, macro economic trends that are well set in (like anti-cyclones with the weather) will have an obvious impact on the profitability of companies. If investors can see a major change (eg the reaction to global warming) as being certain to change the way some things will be done (in this case, the slow demise of petrol and diesel cars), they will make investment decisions to try and own shares in those businesses that will profit from such a change.

Note that they will often be wrong, as investors in Clive Sinclair’s C5 must recall, even though he was exactly right in seeing a future for vehicles driven by a big electric motor.

My observation is that the decisions to follow economic trends are driven not by dry data or economists’ modelling, but by an understanding of a well developed story that every one knows. Investors, even the most specialist and experienced are only ordinary human beings like we are and it is a sure thing they have no better knowledge of the future than we do. I appreciate that is a generalisation and some of us, and some specialists, will be a bit more insightful than others.

Big fund managers do employ strategists (a sort of specialist economist). That is like the rulers of old employing soothsayers and magicians. Today they may use computers as opposed to examining the entrails of a sacrificial goat, but I doubt that their success in making predictions is any better.

Economists as social scientists do help us understand how the world works to distribute money and resources and we benefit from that understanding when applying different techniques, mostly to do with the concept of value and risk, when selecting our investments.

Finally, it is only fair to say that some people we know to have been influential economists were, after some practice, great investors – most famously John Maynard Keynes. But some footballers are great golfers, so one has to be careful not to assume a correlation!