My next door neighbour is 'born again'. He thinks that Darwin recanted shortly before he died and that God made everything in six days. My chances of convincing him that evolution is a process are similar to those of me jumping onto the moon tomorrow night. The choice of site for the prehistoric monuments, by their builders, was so elaborate that we can only guess at their knowledge of topography. To decry the alignments at the heart of the arrangements of stone is to miss nine tenths of their beauty. Although Thom senior is now out of favour his work was pioneering and statistically sound. I should quote something he said - but I can't. He deserves a medal! Don't forget that the horizon was the closest the ancients got to a clock (or calendar).