Data Quote by Fred Brooks

Estimating is what you do when you don't know.

— Sherman Kent

The average estimate themselves by what they do, the above average by what they are.

— Anonymous

The latter estimate is certainly an extravagant exaggeration

— Helmut Schmid

“Inaccurate estimates are a failure of information, not of values or principles. If the numbers are wrong, fix the numbers and communicate the consequences.”

— Kent Beck

Managers who don't know how to measure what they want settle for wanting what they can measure.

— Russell L. Ackoff

“Since it is all based on statistics, the size of the company’s database is the key to making accurate predictions”

— Yuval Noah Harari

If I plug my estimates into the Magic Formula, and it comes out cheap, that's good.

— Joel Greenblatt

Productivity is notoriously difficult to predict.

— Alan Greenspan

Perhaps there really are managers who can outperform the market consistently - logic would suggest that they exist. But they are remarkably well-hidden.

— Paul Samuelson

“If we had enough data then this statistical approach would undoubtedly sort out these things, and a lot of problems are arising precisely because…

— Jennifer K. McArthur

“The truth is that it doesn’t matter how much companies research, how well they plan, how much money they spend, or how smart their…

— Cindy Alvarez

After taking risk into account, do more managers than you’d see by chance outperform with persistence? Virtually every economist who studied this question answers…

— Eugene Fama