On predicting currency markets.

A lot of people are talking about how Sterling is going to crash in the event of the UK voting to leave the EU. Here's my prediction.

Speculators on Sterling are broadly split into four groups right now. One: people betting that the vote will be Remain and the Pound will fall. Two: people betting that the vote will be Remain and the Pound will rise. Three: people betting that the vote will be Leave and the Pound will fall. Four: people betting that the vote will be Leave and the Pound will rise. Yes, these groups can be split into probably hundreds of further sub-groups, but that's a reasonable simplification.

Over the next few days, one of these groups is going to make a lot of money. And, right now, no-one knows which group that is. And here's the thing: all four groups are comprised of experts.

When someone tells you with utmost confidence what is going to happen, remember that.