On that basis, the euro-area would have no reason -- and certainly no right under European legislation -- to seek to act in any discriminatory way. Indeed, it would be economically damaging to both sides if it were to do so. I have no serious concerns on this score. Assuming, as I do, a continuing responsible and constructive relationship -- which, as I say, would clearly be in our mutual interest -- it seems to me that some of the concerns that are occasionally expressed, for example, about the possible loss to the UK of internationally mobile investment, are exaggerated. I would suppose that, in the future as in the past, investment will be located wherever it is expected to earn the highest return -- indeed I would suppose that shareholders would insist that this be the case. And while exchange rate uncertainty may be a factor in such decisions, it is not at all clear that it is likely to be the decisive factor very often, when set, for example, against the whole range of supply-side influences, including labour market flexibility. Similarly, in relation to concerns about the future of the huge UK financial services industry, the reality is that financial activity will be carried on wherever it can be carried on most conveniently, efficiently and profitably. And in this case, too, the question of whether or not the UK is part of the single currency is unlikely to be decisive.
In Sweden and many other countries, the old idea, in the 1950s and 1960s, that a trade-off exists between inflation and unemployment resulted in an increasingly high level of trend inflation. When the drawbacks of active economic policies of this type became apparent, people in general and their representatives also feared the other extreme - a monetary policy that consistently aimed at keeping inflation as low as possible. Some countries, of which Sweden is one, are basically averse to deflation. So a regime whereby monetary policy has a systematic, long-term commitment to keeping inflation at a predetermined level of 2 per cent, neither more nor less, represents what many people perceive as a balanced approach to avoiding deflation as well as inflation. This has made it easier to establish the legitimacy of the regime in the public mind. Some relevant issues for a practitioner Let me now turn to some matters which a practitioner finds important and which will also be touched upon during the coming two days. BIS Review 58/1998  -3-  One issue concerns the indicator of inflation that is appropriate to use as an explicit target. The practical considerations in this respect are complex and are currently being debated in Sweden. The consumer price index has the advantage of being familiar to a wide public. Besides measuring trend inflation, however, it also gives information about price fluctuations that stem from transitory supply-side shocks, for example changes in indirect taxes and interest costs.