Nevertheless, if the astronomical hypothesis is correct, it remains unclear importantly WHY ancient megaliths creators (Hawkins calls them "astronomers, architects, builders working") was carried out these complex, labor-intensive and long-term astronomical observations? With regard to the observations of the Sun, suggested that they performed to determine the exact timing of agricultural operations (start sowing, harvesting).
But because the farmer is not required for accurate astronomical date, much more important to know the state of the weather and the soil, and these factors vary from year to year in relation to astronomical dates, and even within days and weeks! And it is quite unclear why megalithic astronomers needed so thorough and systematic observations of the moon. But, according to Hawkins, Stonehenge was first and foremost the lunar observatory, as well as other similar facilities in Britain and Ireland.
What are the needs of the ancient societies were responsible for such monitoring? Not finding on this issue clear answer, John Wood came to the conclusion that "the interest in the moon they bordered on mania." It also makes the assumption that the megalithic astronomers have subtle studies of the Sun and the Moon moves "purely for the sake of intellectual pleasure." It is hard to imagine that society could spend so much resources and effort just for the sake of a small group of priests, astronomers could for hundreds of years to meet their needs in a manic observations of the moon …