Unfortunately you are correct. I know very little and enjoy this site. It is unfortunate that insults occupy so much of the threads. There is no need for insults. I was sort of a crack pot on my favoured astronomy site and presented alternative ideas however when folk tried to help I was happy to receive help, and by being respectful learnt more. I think many miss a wonderful opportunity when they just want to blurt out non science and happy to resort to insults. Thank you for your input.