Dr. Dean has repeatedly made optimistic predictions about Washington, where he made several appearances on Tuesday and Wednesday.
This hasn't stopped analysts from making optimistic predictions about the technology's success.
Wall Street forecasters tend to make overly optimistic predictions, and almost all failed to foresee last year's recession.
On nearly every deal since it changed its standards, S.& P. has been willing to make more optimistic predictions about the bonds it was rating than the other agencies rating the deals, according to analysis of data from company reports.
Mr Immelt has also given up a special, three-year, long-term incentive payment that would have been worth $11.7m.Some critics claim that GE's boss has dented his credibility by making several optimistic predictions that have been quickly proved wrong.
The maths becomes very complicated when it spirals into these hypothecations, but the tendency is to make an optimistic prediction, so as to justify making an attractively high offer to the perennially cash-strapped Department of Transport.
Krispy Kreme shares surged after the initial offering as the company, profitable and achieving near-cult status, doubled its earnings and made increasingly optimistic predictions.
More recently, the Bush administration made absurdly optimistic predictions about the Iraq war.
At his final campaign meeting in Peoria on Monday night, Santorum made no overly optimistic predictions about the outcome.
