because they donât emit enough light. We can only find out about them by using scientific tricks. Theoretically theyâre everywhere. But you try listening for signals from a hundred billion stars!â
âI get the picture.â Anawak grinned. âTracking twenty thousand whales is easy by comparison.â
âDo you see now how a job like mine can make you old and grey? Itâs like trying to prove the existence of a teeny-weeny fish by straining the ocean litre by litre. And, remember, fish donât keep still. Thereâs a good chance that youâll strain for ever and decide in the end that the fish was never there. Yet all the while it was swimming along with thousands ofothers - just always somewhere else. Phoenix can strain several litres at once, but itâs still limited to, say, the Georgia Strait. Do you see what Iâm getting at? There are civilizations out there, but I canât prove it. The universe is big, maybe infinite - the observatoryâs drinks dispenser can brew coffee stronger than our chances.â
Anawak thought for a moment. âDidnât NASA send a message into space?â
âOh, that.â Her eyes flashed. âYou mean, why donât we get off our butts and start making some noise of our own? Well, youâre right. In 1974 NASA sent a binary message from Arecibo to M13, a globular star cluster a mere twenty-one thousand light years away. But the essential problem remains the same: whether a signal comes from us or from somebody else, all it can do is wander through interstellar space. It would take an amazing coincidence for someone to intercept it. Besides, itâs cheaper for us to listen than transmit.â
âEven so, it would improve your chances.â
âMaybe we donât want that.â
âWhy not?â Anawak was bewildered.
âWell, at SETI we want to, but plenty of folk would rather we didnât draw attention to ourselves. If other civilizations knew we were here, they might rob us of our planet. God help us, they might even eat us for breakfast.â
âBut thatâs ridiculous.â
âIs it? If theyâre clever enough to manage interstellar travel, theyâre probably not interested in fisticuffs. On the other hand, itâs not something we can rule out. In my view, weâd be better off thinking about how we could be drawing attention to ourselves unintentionally, otherwise we could make the wrong impression.â
Anawak was silent. Eventually he said, âDonât you ever feel like giving up?â
âWho doesnât?â
âAnd what if you achieve your goal?â
âGood question.â Briefly Crowe was lost in thought. âFor years now Iâve been wondering what our goal really is. I think if I knew the answer Iâd probably quit - an answer is always the end of a search. Maybe weâre tortured by the loneliness of our existence, by the idea that weâre just a freak of nature, the only ones of our kind. Or maybe we want to prove that thereâs no one else out there so we have the right to occupy aprivileged position. I donât know. Why do you study whales and dolphins?â
âIâm justâ¦interested.â But thatâs not quite true, he thought. Itâs more than an interestâ¦So what am I looking for?
Crowe was right. They were doing much the same thing, listening for signals and hoping for answers. They both had a deep-seated longing for the company of intelligent beings other than humans.
She seemed to know what he was thinking. âLetâs not con ourselves,â she said. âWeâre not really interested in other forms of intelligent life. We want to know what their existence might mean for us.â She leaned back and smiled. âI guess weâre just looking for meaning.â
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It was nearly half past ten when they said goodbye after a drink in the lounge - bourbon for Crowe and