But there is more than enough in their relationship so far to persuade both men and both parties to keep on walking arm-in-arm.

ECONOMIST: Terms of engagement

There are also a lot of people who do not keep to the left of the trail when walking, or stay on the pedestrian side when the trail is split into cycle and pedestrian sections.

BBC: Speedy Taff Trail cyclists in Cardiff told 'slow down'

He trains video cameras on his artisans to keep those precious metals and gems from walking out the door.

FORBES: Crafty