explanation

Getting the stars right

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Does it matter?

We wonder how careful a fiction author really needs to be.

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Octopus arithmetic

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How different could it get?

We ponder how to communicate with aliens.

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Language change

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The long and short of it

We ponder an old textbook.

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Responsibility

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The passive voice

Sometimes it’s hard to work out who is responsible.  It’s only going to get harder.

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Too simple, or not simple enough

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Modeling stars

How do you know when you’ve included all the important things?

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Cyborg students

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Mechanical aids

When we test students today, what do we test?

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Microclimates

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Weather and learning

If you look closely, there is enormous diversity.  This can be a problem.

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What it looks like

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The craters of the Moon

It looks like something familiar. . .

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Tinkering

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Radio sets and Perl

Playing around can be unexpectedly useful.

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Prepositions and infinitives

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A difficult translation

English is a very unusual language.

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