I have been wondering for some time why on earth the JCB has been allowing the yen to stay so high. It would seem a no-brainer to sell it down - they have all s

I have been wondering for some time why on earth the JCB has been allowing the yen to stay so high. It would seem a no-brainer to sell it down - they have all sorts of incentives. The car companies in particular must be in a state of permanent howling rage about it. And yet they haven't done it. There must be an awfully good reason for that.