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 boss yells at the employee, the employee yells at their spouse, the spouse yells at the child, the child yells at their younger sibling, the sibling yells at the dog, the dog pees on the rug. The term emotional hot potato for this comes from Lawrence Cohen in Playful parenting. Funny how bad moods really can work like this.

Emotional hot potato

Simon Sinek’s simple idea to start with why. To get a better feel, watch his 18min TED talk: How great leaders inspire action. I found his concrete example of “It was the ‘I have a dream’ speech, not the ‘I have a plan’ speech,” helps keep in mind the power of starting with why and painting a vision in order to inspire and lead. Now, if you have a vision, a strategy and a plan, well, then you’re in business.

People don’t buy what you do, they buy why you do it.
— Simon Sinek

Simon’s has parallels with another I like:

Products aren’t just things that you buy, they’re things that you buy into.

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The golden circle