My sister just emailed, lamenting the fact that her son and the wife of her other son are going to Siri Lanka on holiday together next week and they've only just thought to mention it to her. I replied as follows: We have to remember that we are no longer the sun surrounded by its attendant planets. We are a rather uninteresting outer planet, only dimly illuminated by the sun (or daughter) and on an orbit that takes so long to make one revolution it is easy for our existence to be forgotten. The other problem is that we are so far from the inner planets that messages take a long time to reach us, so we are always the last to know of developments. If we try to respond our feeble transmissions are lost in the noise. My sister is very artistic and very non-scientific. I await her reply.
Bill