She denied it but she had been spotted in the act.

And on a programme of works of this magnitude, passengers will need to be mindful of the age-old maxim of 'no gain without pain'.

To prevent them from reading his mind, he wore a tinfoil hat at all times.

'Oh, yes. A man was brought to us about a year ago. There'd been a big storm along the southern sector of the Taklamakan. It went on for four or five days. This man was a goatherd from Tongguzbasti. He'd gone out into the desert in search of tamarisk, along with a camel for the load. At midday he had some bread and water and lay down for a sleep. When he woke there was a storm the like of which he'd never seen before. There was nothing for it but to hunker down and make the best of it; but at some point - whether it was day or night he couldn't say - he found himself on his feet, shouting and screaming at the noise, and walking for what must have been miles.'