andyfuller wrote:If you are predictive or reactive you have to take a view to enter a profitable trade. You have to decide to either buy or sell.
You can toss a coin. If the market moves in your favour, stay with it till the trend stops. If it goes against you, scratch your trade quickly.
Let's say you were to map on a histogram every person's IQ score in the country (lowest to highest on the x axis, number of people on the y axis), you'll probably end up with the normal shaped Bell Curve, which represents normal random distribution:
http://en.wikipedia.org/wiki/Standard_deviation.
Trend followers believe that markets don't conform to normal distribution, but have a fat right tail - see the charts on this page:
http://www.trendfollowing.com/whitepaper/mauboussin.pdf.
If markets were completely efficient, trend following wouldn't work. Neither would scalping, for that matter.
andyfuller wrote:
So no one can predict anything consistently yet he can predict that investors will remain convinced that they can predict the future.
All he is predicting is that there won't be a general enlightenment anytime soon. There was a tulip mania in Holland in the 17th century and a housing bubble in the UK within the last decade. Just as it's safe to say that people won't stop committing crime in the near future, it's also safe to say that people won't stop making irrational, emotion-driven financial decisions...
Regardless of your style of trading, your Betfair profits ultimately stem from the fact that there are punters out there who think they have some kind of insight into what's going to happen in a race, yet the bookmakers' balance sheets show that the vast majority of them are pretty clueless with their predictions. So your profits, like John W Henry's, are due to people incorrectly thinking that they can predict the future!
Jeff