Imagine you are the controller of a space mission about to send your astronauts to boldly go where no human has gone before.
Now zoom back to earth and picture yourself as a general getting ready to assemble your troops around the battlefield for the ultimate showdown with the enemy.
Next transplant yourself into the mind of a children's party organizer on the verge of setting up a picnic birthday celebration for the ten-year-old daughter of your best client and all her excited sisters, brothers and friends.
In each of these situations, as the main planner of a happening that's important – and potentially fraught – there is something you want to have in advance.
You want to get as much ...