A Complex Decision Is Like A Great

The Aim ... Is To Provide A Clear And Rigorous Basis For Determining When A Causal Ordering Can Be Said To Hold Between Two Variables Or Groups Of Variables In A Model . . . . The Concepts Refer To A Model-a System Of Equations-and Not To The 'real' World The Model Purports To Describe.

Engineers Are Not The Only Professional Designers. Everyone Designs Who Devises Courses Of Action Aimed At Changing Existing Situations Into Preferred Ones. The Intellectual Activity That Produces Material Artefacts Is No Different Fundamentally From The One That Prescribes Remedies For A Sick Patient Or The One That Devises A New Sales Plan For A Company Or A Social Welfare Policy For A State.

Learning Results From What The Student Does And Thinks, And Only From What The Student Does And Thinks. The Teacher Can Advance Learning Only By Influencing The Student To Learn.

A Wealth Of Information Creates A Poverty Of Attention.

There Are No Morals About Technology At All. Technology Expands Our Ways Of Thinking About Things, Expands Our Ways Of Doing Things. If We're Bad People We Use Technology For Bad Purposes And If We're Good People We Use It For Good Purposes.