explanation

April fool?

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Camouflaged truth

It’s not always easy to sort out fact from falsehood.

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time and tide

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Teaching complexity

Almost every subject is complicated if you go deeply enough into it.  Where do you stop teaching?

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A detached bit of night

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The solar eclipse

We remind you of an opportunity next month.

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Breadcrumbs

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Not even suggestions

Our tutor’s activities sometimes depart from the syllabus.

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Clutter

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The state of your desk

How clear should your desk, office or home be?

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New books and old

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Adding and subtracting

We have too many books, but sometimes we add more.

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The prudent mariner

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The ways of the sea

Our navigator realizes that there’s always more to learn.

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Aldehydes and ketones

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The road not taken

Our tutor considers past alternatives.

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Three dimensions are hard

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Two is easy, four is elegant

Sometimes the more sophisticated stuff is easier.

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Deficient optics

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Fixing it in post

The human eye is not a great imaging system.

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