1965 I stand flatly behind prediction number fifteen.

1980 I still stand flatly behind the first sentence of that two - part prediction above. The second part I could weasel out of by pointing out that on this planet no state that calls itself Marxist or Socialist or Communist has ever established a system approximating that called for by the works of Karl Marx and Friedrich Engels. And never will; Marx's utopia does not fit human beings. The state will not "wither away."

But I shan't weasel as I am utterly dismayed by the political events of the past 15 - 20 years. At least two thirds of the globe now calls itself Marxist. Another large number of countries are military dictatorships. Another large group (including the United States) are constitutional democratic republics but so heavily tinged with socialism ("welfare state") that all of them are tottering on the brink of bankruptcy and collapse.

So far as I can see today the only thing that could cause the soi-disant Marxist countries to collapse in as little time as twenty years would be for the United States to be conquered and occupied by the USSR - and twenty years ago I thought that this was a strong possibility. (I'm more optimistic now, under the present three - cornered standoff.)

If we were to be conquered and occupied, the Communist world might collapse rather quickly. We have been propping them up whenever they were in real trouble (frequently!) for about half a century.

16. 1950 Increasing mobility will disenfranchise a majority of the population. About 1990 a constitutional amendment will do away with state lines while retaining the semblance.

1965 No further comment.

19801 goofed. I will be much surprised if either half of this double prediction comes to pass by 2000 - at least in the form described and for the reasons I had in mind. The franchise now extends to any warm body over eighteen years of age and that franchise can be transferred to another state in less time than it takes the citizen to find housing in his/her new state.

Thus no constitutional amendment is needed. But the state lines are fading year by year anyhow as power continues to move from the states to the Federal government and especially into the hands of non-elected bureaucrats.

17. 1950 All aircraft will be controlled by a giant radar net run on a continent - wide basis by a multiple electronic "brain."

1965 No further comment.

1980 This prediction still stands - although it may be my wishful thinking. Such a system was designed over thirty years ago; Congress wouldn't buy it. It would be more expensive today ... and is far more urgently needed. Anyone who has ever been in the tower of a busy field or has ever ridden in the "office" of a commercial plane during a takeoff or landing at a busy field knows what I mean. All our fields are overloaded but anyone who goes in or out of San Diego or of O'Hare - Chicago or - but why go on? Our airplanes are pretty darn wonderful ... but our method of handling air traffic at fields is comparable to Manhattan with out traffic lights. -

I shall continue to fly regularly for two reasons: 1) Mrs. Heinlein and I hope to go out in a common disaster. 2) Consider the alternatives: AMTRAK (ugh!), buses (two ughs!), and driving oneself. The latter is fine for short distances (OPEC and Washington permitting) but, while in my younger days I drove across this continent so many times that I've lost count, today I am no longer physically up to such a trip even with a chauffeur.

But that totally - automated traffic control system ought to be built. Expensive, yes - but what price do we place on a hundred dead passengers, a flight crew, and a modern airliner? In the present state of the art in computers and in radar neither the pilot nor the controller should be in the loop at landing or take off; they should simply be alert, ready to override, because even the most perfect machinery is subject to Murphy's Law. But all routine (99.9%+)takeoffs and landings should be made by computer.

If this pushes small private planes onto separate and smaller fields, so be it. Bicycles do not belong on freeways. I hate to say that, as there is nothing more fun than a light sports plane.

(Nothing that is not alive, I mean. Vive la difference!)

(On air traffic control I speak with a modicum of authority. I returned to the aircraft industry for a short time in 1948 to research this subject, then wrote an article aimed at the slicks: THE BILLION - DOLLAR EYE. I missed; it is still unpublished.)

18. 1950 Fish and yeast will become our principal sources of proteins. Beef will be a luxury; lamb and mutton will disappear.

1965 I'll hedge number eighteen a little. Hunger is not now a problem in the USA and need not be in the year 2000 - but hunger is a world problem and would at once become an acute problem for us if we were conquered.. . a distinct possibility by 2000. Between our present status and that of subjugation lies a whole spectrum of political and economic possible shapes to the future under which we would share the worldwide hunger to a greater or lesser extent. And the problem grows. We can expect to have to feed around half a billion Americans circa year 2000 - our present huge surpluses would then represent acute shortages even if we never shipped a ton of wheat to India.

1980 It would now appear that the USA population in 2000 A.D. will be about 270,000,000 instead of 500,000,000. I have been collecting clippings on demography for forty years; all that the projections have in common is that all of them are wrong. Even that figure of 270,000,000 may be too high; today the only reason our population continues to increase is that we oldsters are living longer; our current birthrate is not sufficient even to replace the parent generation.

19. 1950 Mankind will not destroy itself, nor will "Civilization" be destroyed.

1965 I stand by prediction number nineteen.

1980 I still stand by prediction number nineteen. There will be wars and we will be in some of them - and some may involve atomic weapons. But there will not be that all - destroying nuclear holocaust that forms the background of so many SF stories. There are three reasons for this: The United States, the Soviet Union, and the People's Republic of China.

Why? Because the three strongest countries in the world (while mutually detesting each the other two) have nothing to gain and everything to lose in an all-out swapping of H - bombs. Because Kremlin bosses are not idiots and neither are those in Beijing (Peiping)(Peking).

If another country - say Israel, India, or the South African Republic - gets desperate and tosses an A - or H - bomb, that country is likely to receive three phone calls simultaneously, one from each of the Big Three:

"You have exactly three minutes to back down. Then we destroy you."

After World War II I never expected that our safety would ever depend on a massive split in Communist International - but that is exactly what has happened.

1950 Here are things we won't get soon, if ever:

Travel through time.

Travel faster than the speed of light.

"Radio" transmission of matter.

Manlike robots with manlike reactions.

Laboratory creation of life.

Real understanding of what "thought" is and how it is related to matter.

Scientific proof of personal survival after death.

Nor a permanent end to war. (I don't like that prediction any better than you do.)

1950 Prediction of gadgets is a parlor trick anyone can learn; but only a fool would attempt to predict details of future history (except as fiction, so labeled); there are too many unknowns and no techniques for integrating them even if they were known.

Even to make predictions about overall trends in technology is now most difficult. In fields where before World War II there was one man working in public, there are now ten, or a hundred, working in secret. There may be six men in the country who have a clear picture of what is going on in science today. There may not be even one.