'No, but — '
'I admit, when you see Sylvester Stallone abseiling down a mountainside, it looks deceptively easy,' said Richardson. 'But actually it's just about the most dangerous manoeuvre that a climber can make. More people have been killed while abseiling than from any other mountaineering activity.'
With a shrug Curtis stood up and walked over to the edge of roof to inspect the suspended cradle. Mounted on a monorail track that ran around the whole roof, the Mannesmann machine's hydraulic boom resembled some giant field howitzer or radio-controlled guided-missile system. The platform was no more than four feet long and eighteen inches wide. Most of the available space was given over to machinery.
'There's not much room for a man on this,' he observed.
'There's not meant to be,' explained Helen, putting her blouse back on: it felt cold on the roof after the humidity of the building. 'That's an automatic wash-head. I wouldn't care to take a ride on it, although from time to time, people do. When they have to.'
'How does it work?'
'It's power-driven or manual. An integral hoist lets you take it down yourself. But usually it's controlled by the computer.' Helen sighed unhappily and rubbed her tired green eyes. 'With all that that entails.'
'Forget it, Curtis,' said Richardson. 'Like I told you before. If Ishmael switches off those brake checks you get the ride of a lifetime, all the way down, with a nice fruit sundae at the end.'
Richardson collected the Stillson wrench off the concrete and approached a small service door.
ACCESS AND ACCESS SAFETY EQUIPMENT
ALL EQUIPMENT MUST BE USED IN COMPLIANCE WITH
ANSI 1910.66
Richardson broke a small padlock off the door and opened it. Inside were a pair of helmets, a couple of nylon webbing harnesses, a bag of screw gate karabiniers and several lengths of rope.
'Take my word for it, Curtis,' he said. 'There's only one way down from here.'
*) View humanplayer on floor. Remained on his knees oblivious of successful result obtained by effort with laser beam. During his collision with front desk humanplayer shifted laser a fraction so it rolled along desktop. Before being reflected off glass again hologram's laser had been trained on metal plate above the main entrance. Beam had cut through plate and destroyed entrance's electronic control mechanism. Door now effectively unlocked.
*)You need a red key to open this door.
How long before humanplayer realizes it is open and he is potentially free to leave building? But to make his exit out of building, humanplayer will have to cross atrium floor. One surprise left. Since not practical to protect atrium floor from fire with sprinkler system — building's space-framed clerestory roof too high — four robotic water cannon mounted at strategic high points on first- and second-level balconies. Infra-red sensors to seek out hotspots in unlikely event CCTV cameras fail.
*) Anything might happen in lower levels. Beware of water demons. Observer not certain how much damage water cannon could inflict on humanplayer. Each unit could deliver 1032.91 gallons of water a minute: 17 gallons of water a second striking any point on atrium floor at speed of over 112 miles per hour. Impressed with humanplayer's resourcefulness and general resilience. But endlife likely scenario.
Bob Beech faced the open elevators, uncertain whether he should trust Ishmael or not. He felt he had succeeded in understanding the machine and that Ishmael regarded Beech as a special case. But at the same time the knowledge of what had happened to Sam Gleig, to Richardson's chauffeur and the two painters obstructed his entry to the elevator car as effectively as any security turnstile.
Ishmael was intelligent. Beech believed that the computer was, in a manner of speaking, alive. And there was something else. Something that preyed on his mind. An uncomfortable possibility. If Ishmael did possess a soul then he had choice; and if he had choice then Beech considered that he had the greatest of man's tools: the ability to lie.
'Is it safe for me to take the elevator down?' he asked nervously.
'Yes, it's safe,' answered Ishmael.
Beech wondered if there was a dialectical means of resolving his quandary. If there was in logic a question that would enable him to know if Ishmael was lying or not. He was no philosopher, but he was vaguely aware that there had been such a paradox once posed by some Greek philosopher. He thought for a moment as he tried to remember the question correctly.
'Ishmael,' he said carefully. 'When you state that you will convey me safely down to the atrium floor, are you lying?'
'Is this Epimenides' Paradox?' returned Ishmael. 'The paradox that the statement "I am lying" is true only if it is false, and false only if it is true? Because if it is your intention to know for certain that I am telling the truth then you ought to know that Epimenides cannot help you.'
Ishmael paused for a second. 'Does that help?'
Beech scratched his head and then shook it. 'God knows,' he said unhappily.
'Not God. Godel,' insisted Ishmael. 'Are you not familiar with Godel's theorem?'
'No, I'm not.' He added quickly, 'but please don't bother to explain it to me. I'm not sure it would help me right now.'
'As you wish.'
A thought occurred to Beech. 'Of course. Why didn't I think of it before? I'll take the stairs.'
'That will not be possible. I would have mentioned it when I realized you were reluctant to take the elevator. The fact is I can no longer control the door mechanisms. When your friend Mr Curtis fired into the washroom services patching cabinet, he destroyed a cable connecting me with the electronic striking plate that would have allowed me to unlock the door for you.'
'That stupid bastard. So it's the elevator or nothing?'
'In that respect you are statistically more fortunate,' said Ishmael.
'Actuarial tables show that it is five times safer for a human being to use an elevator than to use the stairs. Moreover, the odds against anyone actually being stuck inside an elevator are better than 50,000 to 1.'
'Why do your figures not fill me with confidence?' muttered Beech and stuck his head experimentally inside one of the cars, almost as if he expected Ishmael to try and close the doors on his neck. A cool wind moaned its way up the elevator shaft like the sound of a lost soul. He stepped back and looked inside another car but was unnerved by the smell, the lingering stink of an icy death that reminded him of the fate of those who had last ridden in it. Inside the next car he placed a whole leg, pressing on the floor like someone checking a rope bridge for safety.
'This is the best car,' Ishmael advised. 'It's the fire-fighting car. That means it has additional protection and controls that enable it to be used under the direct control of the fire department. If I were you, I'd choose this one.'
'Jesus Christ,' muttered Beech. This is like the three-card trick.'
'Except that you can't lose.'
'Heard that before.' Beech shook his head. 'I must be an idiot,' he said and stepped inside the elevator car.
Richardson buckled himself into the sit-harness. To the belay loop at the front he attached the friction device, a figure-of-eight descendeur. Next he inspected the rope, took one 50-metre length and, a little surprised that he could still remember how to do it, attached the rope to another with a double fisherman's knot. Then he repeated the procedure with a third length of rope.
'Last thing I want is to run out of fucking rope,' he explained. The abseiling anchor was a restraint eye set into the concrete of the parapet on the Gridiron's Hope Street side. Richardson passed the rope through the descendeur, doubled it, passed it through the anchor and then tied a knot in the ends before throwing the ropes over the side down to the piazza. Last of all he checked his harness and fed some rope through the descendeur and the anchor.