The agent waved his arm at the tangle of underbrush and swamp.

"Twenty acres of it," he said.  "And at the price we're asking, the best kind of investment that anyone can make.  I tell you, friends, there is no better place you can put your money.  In a hundred years it will bring ten times the price.  In a thousand, if you could hang on to that long, you'd be billionaires."

"But it's just a swamp," the woman said.  "No one would ever want to build there and it can't be..."

You're buying it today," the agent told her, "at so much an acre.  Sell it a couple of hundred years from now and you'll be selling it at so much the foot.  Just take the number of people there will be in the world by that time and compare their numbers to the total land area and you'll see what I mean.  Once they get immortality and begin revivals..."

"But they won't need the land," the woman's husband said.  "Once they get time travel, they'll send people back a million years to colonize the land, and when the land back there is filled, they'll send them back two million and..."

"Now, I tell you honestly," said the salesman, "I wouldn't count on that.  There are a lot of people who have their doubts about time travel.  Forever Center can get it, certainly, if it is possible, but if it's impossible, they won't get it.  And if time travel is impossible, then this land will be worth a fortune.  It doesn't matter that it's a little swampy.  The human race will need every foot of land there is upon the earth.  There'll come a time, perhaps, when the earth will be just one big building and..."

"But there's space travel, too," the woman said.  "All those planets out there..."

"Madame," said the salesman, "let's be realistic for a moment.  They've been out there for a hundred years or more and they have found no planets that a man could live on.  Planets, of course, but nothing that anyone could live on without terraforming and terraforming takes a lot of time and money."

"Well, I don't know," the woman said.  "This piece of swamp seems an awful gamble."

"Yes, it does," her husband said.  "We just thought we'd look into it.  We have been putting most of our money into stamps and we thought it might be a good idea to start spreading it around a little."

"Not that we have so awful much of it," the woman said.  "Of money, I mean."

"Well, now, it's this way," said the salesman smoothly.  "I'll agree that stamps may be a good investment.  But how do you go about establishing title to them?  Sure, you've got them and you put them away in a safety deposit vault or more when you are revived, for hobbies go in cycles.  You go and get them and you probably can sell them at a likely profit.  But a lot of people are buying stamps.  The market might be glutted.  Collecting stamps may not be done any more when you are revived for hobbies go in cycles.  You might not get as much as you'd figured.  You might, even, not be able to sell them at all.  And if something had happened to them, how do you get them back?  Say they were stolen, somehow.  Even if you knew the one who'd took them and even if he still had them, how could you prove that they were yours?  How could you recover them?  There isn't any way to establish title to a stamp collection.  And what if time had ruined them?  What if they'd gotten damp or bacteria had got to work on them or any one of a dozen other things had happened?  What have you got, then?  I tell you, folks.  You've got nothing.  Absolutely nothing."

"That is right," the husband said.  "I never thought of that.  But the land would still be here and you'd have legal title."

"That's right," said the agent.  "And to protect it through the years, all that you have to do is open an account with Forever Center and give us the right to draw on it to pay the taxes (which won't amount to much) or to cover costs necessary to protect the title.