-band link in operation. The narbeing more constrained, is easier it, we want a pattern too regular noise but too irregular to be a ced pulsation phenomenon. Standinclude the binary expansion of the sequence of the first few prime ple arithmetic, such as "3+4=7." th, it is probably rank terrestrial o expect others to attach the same pi that we do. Even in our own uch constants as e and Log 2 are portant, and the exaggerated role gely from the Greeks' undue efforts square the circle. Doing arithmetic ack that such concepts as "plus" must be brought into the picture. ommendation is the prime sequence

13, 17, 19, 23 . . ., with a long e the nonaccidental nature of the so much that I'm sure these Extrauld recognize the primes; but if y must be dull fellows indeed, and soon not get acquainted. Of course, se, 1, thus: 11 111 - 11111

We could equally well send hmetic progressions-for example, 3, 5 . . .; 1, 4, 7. . . . This makes 5 on pattern-recognition capability, low-threshold intelligence detector. Netherlands mathematician, Hans =currently at work on a book to s (for lingua cosmica), in which to describe an ideal language for urse. This is all well and good, Arcturists may be less interested incos than in teaching us some us invention of their own. ange we can demonstrate gadgets, itions, at which our species excels. blicly killing one another, we can strate our intelligence by collecting cimens to raise in captivity. Such osity is an unmistakable sign of though with a notable drawback: n belongs to the dominant species, d imprisonment may be regarded

ar.

me to the really significant question. ave passed the IQ tests, resolved c questions, and have an effective is link going. What do we talk lephone and Western Union assume rs already have something in mind

to say, so that classical information theory turns out to be of no help. Ruling out such commonplaces as baseball scores, the weather, and backfence gossip, I have compiled the following list of likely topics for discussion with our extraterrestrial neighbors: (1) Help! (2) Buy! (3) Convert! (4) Vacate! (5) Negotiate! (6) Work! (7) Discuss!

Each of these topics merits a brief elucidation: (1) Help! assumes we have encountered a superior civilization and want their help in solving our earth-bound problems or fighting our internecine battles.

(2) Buy! presupposes that some basis for mutually profitable trade exists and should be acted upon.

(3) Convert! suggests that as missionaries from the Chosen Planet we have undertaken to spread the Good Word that the Galaxy is coming to an End.

(4) Vacate! means that we like the planet and figure that we can defeat the inhabitants.

(5) Negotiate! means that we are looking for new members in OPTO (the Occidental Planetary Treaty Organization).

(6) Work! supposes that we've uncovered a good source of cheap labor.

(7) Discuss! presumes that there is no common environment which we and they can share. Only in such a case does the history of our species offer encouragement for the prospect of free mutual interchange of ideas, experiences, and scientific theories.

Naturally, we must not risk telling too much until we know whether the Extraterrestrials' intentions toward us are honorable. The government will undoubtedly set up a Cosmic Intelligence Agency (CIA) to monitor Extraterrestrial Intelligence. Extreme security precautions will be strictly observed. As H. G. Wells once pointed out, even if the Aliens tell us in all truthfulness that their only intention is "to serve mankind” we must endeavor to ascertain whether they wish to serve us baked or fried.-END

AN/MRC-66 Communication Central provides a 20-mile radio telephone system between a dozen tactical units on t move...plus full compatibility with other radio and wire c This advanced single sideband concept, developed by Mot for U.S. Army Signal Corps, offers the transmission of simultaneous voice, teletype, facsimile and data transmissi far superior to conventional modulation systems. SSB also more channels in a given portion of the crowded RF spect and more systems in a given area. ✩ Automatic Output Control insures uniform signal reception regardless of whe vehicles are deployed 100 feet or 10 miles from the Centra Three operating modes-Normal, In-Channel Net and Em Net-enhance the basic system flexibility. ☆ Simplification inherent in Motorola's concept and modular design afford highest possible degree of reliability and maintainability

Date

e clear that I am asking the Congress Entry to accept a firm commitment to se of action-a course which will last ears and carry very heavy costs-an 7 to $9 billion additional over the ars. If we were to go halfway, or reghts in the face of difficulty, it would ot to go at all."

se words, President Kennedy on May or action and new money to support national space program, with the spef getting an American to the moon and e the end of the decade. As this is Senate space committee, chaired by t Kerr, Democrat of Oklahoma, is the President's proposals, which total million additional space budget money 2, some $531 contributing to the moon at the technical difficulties of such an e formidable is beyond question (see e Moon," page 44). But there is strong the President's requests for moneylecting decisions that, sadly, were not ng the Eisenhower Administration, -hole process of speeding up the space

Retiring from active Air Force service at the end of this month is Brig. Gen. Don Flickinger, Special Assistant for Bioastronautics to the Commander, Air Force Systems Command. A longtime proponent of man-in-space programs, General Flickinger has in his most recent post been coordinating biomedical work within AFSC.

SPACE

program might have been a lot easier-will go through both congressional space committees and both houses with no major hitches.

A vital portion of the President's program is his request for $62 million for solid-fuel spacepropulsion development to be undertaken by the Department of Defense. This is a major decision for two reasons: First, it is at least the beginning of a green light for the solid-fuel proponents who have pushed hard on Capitol Hill for a chance to prove their claims of multimillion-pound thrust for their propulsion mode-and second, because it signals a coming healthy technical competition between the National Aeronautics and Space Administration and DoD in the realization of multimillion-pound-thrust goals. In general, NASA will be concentrating on liquid-fueled programs such as the Saturn system, while DoD will specialize in solid-fuel development. Of course, this dual approach will be expensive, and the country might at some future date have to face the prospect of scratching one approach after a sizable investment (although the chances are better than good that both liquid and solid systems will find important uses, separately and in tandem) but such a healthy competition marks a welcome departure from the "eggs-in-one-basket" approach that has generally featured our big booster programs thus far.

As Deputy Secretary of Defense Roswell L. Gilpatric put it to the Senate space committee on the first day of hearings on the new Kennedy space budget:

"To augment the NASA effort, [DoD] is now going to support the national space effort by undertaking the development of large solid-propellant motors. This is a logical contribution to the national effort on the part of DoD in view of the extensive experience which we have obtained as a result of the Pershing, Polaris, and Minuteman programs, and the extensive applied research programs with still larger solid engines which the

SPACE DIGEST / JULY 1961