Analysts spend thousands of hours trying to mathematically determine what will trigger the next rally and how long it will last. Technical analysis is especially prevalent in this effort, although less sophisticated indicators such as hemline fashions or the NFL division of the latest Super Bowl winner also provide fodder for such predictions. This in turn can sometimes lead to speculation that a rally is just around the corner, which can then become a self-fulfilling prophecy.
A rally is caused by a significant increase in demand resulting from a large influx of investment capital into the market. This leads to the bidding up of prices. The length or magnitude of a rally depends on the depth of buyers along with the amount of selling pressure they face. For example, if there is a large pool of buyers but few investors willing to sell, there is likely to be a large rally. If, however, the same large pool of buyers is matched by a similar amount of sellers, the rally is likely to be short and the price movement minimal.
The Liège continued as uncompromisingly an open road event run to an impossible time schedule, and remained Europe's toughest rally until 1964, by which time it had turned to the wilds of Yugoslavia and Bulgaria to find traffic-free roads; but in the end the pressures were irresistible. The Coupe des Alpes struggled on until 1973 until it too succumbed, its demise no doubt hastened by the decision of the French motor sporting authorities to select the Tour de Corse as its representative event in international rally championships.
A Fatal Accident Inquiry into the incident concluded, on 6 September 2011, that McRae was at fault for the avoidable helicopter crash that led to his death and the death of his passengers. Sheriff Nikola Stewart stated, after the 16-day inquiry, that McRae had been engaged in "unnecessary and unsafe" low-level flying at the time of the crash.
Rising investor confidence also indicates a rally, and it is perhaps more powerful than any economic indicator because when investors believe something is going to happen (a rally, for example), they tend to take action (purchasing shares in order to profit from expected price increases) that actually turn expectations into reality. Although it is an objective concept, investor sentiment shows through in mathematical measurements such as the put/call ratio, the advance/decline line, IPO activity, and the amount of outstanding margin debt.