1) Most primitive tools and devices must have been invented independently by different civilizations. 2) If there was someone to put a question there must be somebody, sooner or later, to answer it. 3) There has to be a way out of any situation. 4) By that time the resources of the planet nay have been completely exhausted. 5) A scientist may freely choose his line of research. 6) Everyone might be granted the right to be occasionally wrong. 7) They might have put the sample in freezer; it would be more effective. 8) At all the times there were ideas which should have been given more attention than they actually were. 9.) Good ideas should be written down before they are forgotten. 10) Not a single scientist shall work on the problems whose solution may be a threat to mankind. 11 ) They cannot have reached the same level of development. 12) Nature would never be exhausted to challenge man with more riddles. 13) With our present-day technology such phenomena could not have been observed in the laboratory; what was registered must, in fact, have been due to some malfunctioning of the recorder. 14) Intelligence of human quality is not to be achieved overnight; there ought to pass plenty of time for anything comparable in complexity to human brain to evolve. 15) A true scientist will enjoy his work more than anything else and would often be prepared to sacrifice his weekends and vacation in order to proceed with his research.
