‘Tell me, why do you think traffic jams are such a big problem?’ Marco asks. ‘Well, it’s a pain getting stuck in traffic, isn’t it? And on top of that, traffic jams cost us billions, don’t they?’ ‘Do they?’ he replies. ‘How?’ ‘There are lots of people who don’t get to work on time, and that reduces the number of hours they’re productive for.’ ‘But how serious is that?’ Marco asks with a twinkle in his blue eyes. ‘Why does it matter so much if people arrive home or get to work a few minutes later because of a traffic jam? Don’t you have to queue up at the supermarket from time to time?’
