Quotes in data
There are three ways to get better figures... Improve the system... Distort the system... Distort the figures
Remember that all models are wrong; the practical question is how wrong do they have to be to not be useful.
In a world without data, opinion prevails.
Managers who don't know how to measure what they want settle for wanting what they can measure.
Costs do not exist to be calculated. Costs exist to be reduced.
Since all models are wrong the scientist must be alert to what is importantly wrong. It is inappropriate to be concerned about mice when there are tigers abroad.
Statisticians, like artists, have the bad habit of falling in love with their models.
People who can't understand numbers are useless. The gemba where numbers are not visible is also bad. However, people who only look at the numbers are the worst of all.
Everyone is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.
When a theory really has got your brain in its grip, contradictory evidence - even evidence you already know - sometimes becomes invisible.