## Tools for Thought |

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Page 139

It is important to realize what a correlation between two variables

particular, what it does not

necessarily in all populations), there is a tendency, whose strength is expressed

in ...

It is important to realize what a correlation between two variables

**means**, and inparticular, what it does not

**mean**. It**means**that, in the population studied (notnecessarily in all populations), there is a tendency, whose strength is expressed

in ...

Page 208

There is no rigorous

a particular variable in such a system is a question of degree, a question of

judgment, a question of convention. Moreover, the importance it has by any of

these ...

There is no rigorous

**means**of knowing which 'matter'. Indeed, the importance ofa particular variable in such a system is a question of degree, a question of

judgment, a question of convention. Moreover, the importance it has by any of

these ...

Page 212

By

the world's resources in the past and in the future under various conditions and

can explore

World ...

By

**means**of graphic displays of the earth, players in the game can learn aboutthe world's resources in the past and in the future under various conditions and

can explore

**means**of deploying the world's resources. For a description of aWorld ...

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### Common terms and phrases

A. N. Whitehead actually alternative atoms attractor surface become behaviour better biological C. H. Waddington cent chreod Club of Rome complex systems components course curve deal diagram discussed effect epigenetic landscape estimates example experience exploratory forecasting exponential growth factors feed-back flats future Games Theory genes give graph happen homeorhesis human ideas important increase Information Theory input instance interactions involved kind large number mathematical means measure move natural resources operational research organized particular pattern pay-off table perhaps philosophy pollution population possible practical Prisoner's Dilemma problem processes produce relations relevance tree schismogenesis scientific method scientists sequence shape simple simulation situation sort statistics step strategy structure symmetry techniques technological Theory things tion Tools for Thought turn types U-Boats usually values variables Venn diagram whole worm