Means one in front of another, as opposed to side-by-side. It comes from a tandem harness with two horses pulling with one in front of the other. So technically no matter how many people you put on a bike, if they are in a straight line, they are still in tandem. As opposed to a bike where you sit side-by-side, also known as a sociable.

I had to check this one out as on Friday I’m doing a somewhat crazy cycle on a home-made 6-man bike (all sitting in tandem) from London to Amsterdam for a great cause - KEEN London who provide one-to-one sports for children with special needs. Any donation you can make will make a huge difference to a small organisation. With just one day left, please donate here if you can

In tandem

Dividing up money in your head. Nutmeg, where I work, is, among other things, designed to help out with this.

PS
It’s been a long absence. A new child, moving house and all sorts of fun has happened. I’ll try to keep at it at a more leisurely pace. Thanks again for following.

Mental accounting

How we choose to separate objects from the background. Also see FedEx. Travel is good for resetting our figures and grounds.

The classic vase/faces illustration is an example of an ambiguous figure—or sometimes a reversible or bistable figure.

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Figure and ground