Two of everything from Ireland

Look at a computer holding the same photographs twice over, work out on your own which set is the one worth keeping, and put a spare copy of them somewhere that is not the computer.

This course has been about where your things actually are — on a shelf in a large dull building beside a highway, on the machine in front of you, or in several places at once in versions that are not the same as each other.

Here is a computer with one vacation on it twice, no room left, and a memory stick plugged in for the first time in years. Telling the two sets apart is the whole of it, and nothing on the screen will say which is which.

Key points

What to remember

Try this

Look in the Downloads folder on your own computer for anything beginning IMG- with a long number after it. Those are almost always shrunken copies of pictures you already have, sent back to you by somebody else.

Practice: Two of everything from Ireland. Your first lesson is free, with no account or card; the rest are part of a Lantern plan. Interactive lessons require JavaScript.

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