Assuming Quote by John Maynard Keynes

All economic forecasts are subject to considerable uncertainty. There is always a wide range of plausible outcomes for important economic variables, including the federal…

— Jerome Powell

The quest for certainty in forecasting outcomes can be the enemy of progress.

— Nate Silver

It is hard to have great confidence in predicting what market reactions to Fed decisions will be.

— Janet Yellen

“Expectations shape outcomes in a world of uncertainty. Expectations about the economy end up being self-fulfilling prophecies. If you expect tomorrow to be better…

— Sanjaya Baru

Investing is an activity of forecasting the yield over the life of the asset; speculation is the activity of forecasting the psychology of the…

— John Maynard Keynes

“it’s clear now that there are three cognitive features at the heart of prospect theory. They play an essential role in the evaluation of…

— Daniel Kahneman

Of course, economic forecasts must be revised when new information arrives and are thus necessarily provisional.

— Ben Bernanke

The principles of successful stock speculation are based on the supposition that people will continue in the future to make the mistakes that they…

— Edwin Lefevre

Optimism doesn't wait on facts. It deals with prospects. Pessimism is a waste of time.

— Norman Cousins

Although we deal with probabilities and expectations, the actual results can deviate substantially from such expectations, particularly on a short-term basis.

— Warren Buffett

Investing is about making probabilistic decisions with limited information about an unknowable future. The variables are well known, as are the possible outcomes.

— Barry Ritholtz

“Making specific forecasts in uncertain situations was, is, and will always be problematic and often misleading. This lesson stands today. The bigger the potentially…

— Bryan Norcross