There are just two countries that are double-landlocked: Liechtenstein and Uzbekistan. Their unusual claim to fame is that not only are they landlocked with no access to the high seas themselves, but they are also surrounded by countries that are themselves landlocked.

Another way to put it is that you have to cross two national boundaries before you can reach water connected to the oceans.

Growing up on the island of Great Britain I somewhat took for granted that with a few hours in most directions and I’d be looking out onto the sea. But that’s not at all the case if you were born in a landlocked country.

Double-landlocked countries

From the prefix iso meaning equal and khronos meaning time it literally means equal times. And whereas maps are usually put together with lines of equal distance you can either construct maps, or overlay maps as here, with lines of equal time. The overlay view gives you time contours rather than, say, altitude contours. Handy for checking things like commuting distance. I like how you find little islands where there is fast transport in and out like trains or planes.

You can explore time maps of London at mapumental.

Isochrones

The singularity effect is the name for how we care disproportionately about an individual as compared to a group. Think Saving Private Ryan, where an enormous effort is launched to save a single soldier in the Second World War. It turns out that even as you add a second person, there’s some justification for something known as compassion fade. The addition of more people doesn’t increase our willingness to help proportionally — our compassion fades as more people are involved.

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The singularity effect