Additive and Multiplicative Uncertainty Revisited: What Explains the Contrasting Biases?

above the certainty level while for additive uncertainty the price should be lower than the certainty level. This note gives an intuitive explanation for the result after first presenting a parsimonious review of the two models. We also discuss which, if either, of the two models is more realistic. Received December 14, 2001; revised version received July 16, 2002 Published online: April 30, 2003 We thank referees for helpful comments. Ciaran Driver would like to acknowledge the research facilities from ANU, Canberra for their help in writing this paper.     

The Why's of Business Revisited

One can determine the nature of something by asking what it is for. For example one understands what a chair is when one understands it is for sitting on. This involves understanding its purpose. One type of corporation is the for-profit-corporation. This seems to indicate that this type of corporation, the business corporation, has as its purpose to make a profit. Is that as obvious as it first appears? The favorite way for philosophers to arrive at the "purpose" of anything is to ask the question "Why?" But there are at least two answers to the question "Why"? when addressed to a social practice such as business. One might be asking for a psychological account (explanation) of "Why" a person does business, and this is primarily answered by discovering the motives behind business activity; or one might be asking for a justificatory reason (justification) for the practice – what purpose legitimates business as a human activity. These two answers are often conflated and thus the purpose of business is often considered to be answered by giving the psychological account of the self-interested profit-making motive. This paper will attempt to highlight the importance of making the distinction between motive and purpose clearly, show what confusions arise when the distinction is ignored, and hint at some of the structural philosophical reasons why the distinction got blurred in the first place.     

iTV: A major opportunity for financial services,or not?

Interactive television has arrived, thanks to substantial technology investments that have been made by Sky and others. It is growing in importance as innovative interactive applications are developed for broadcast programmes (eg the BBCi service and Big Brother), and for advertising — and will develop further when broadband deployment gets to critical mass. Readers should not expect a television-variant of the world wide web, however. This was tried during 2000–2002 in the form of web look-alike, interactive ‘walled garden’ sites, and failed to attract critical mass footfall. The model has evolved and now revolves around interactive content synchronised with broadcast, which offers financial services companies an interesting new way to increase awareness and to differentiate the service presentation. Furthermore, over the next ten years, broadband is expected to usher in a new era of personalised television — in which specialised broadcasts (such as personal pensions advice programmes) can be made available on demand. The observations in this paper are mainly drawn from the UK, where digital television penetration is high; the lessons can be applied more broadly, however, and are relevant to any organisation thinking of promoting its service through entertainment channels.     

Global economy gathering strength

Encouraged by a highly expansionary economic policy, the global economy is enjoying a rapid upturn. Utilisation of capacity is high in many sectors, particularly in the growth centres of the USA and East Asia, where China leads the field. With inflationary risks on the increase, most countries are now shifting the focus of economic policy. Fiscal policy in particular can be expected to provide little in the way of further stimulus. In addition, there has been a turnaround in interest rates in many countries. Yet how quickly can the monetary reins be tightened without jeopardising growth or endangering price stability?