dave, you should read your own posts sometimes. You said that light and sound are nothing unless there is someone there to see and hear them. I repeat that if that were true then photocells would not work to operate things remotely even though nobody actually sees the light. And those nocturnal recorders would still record the sounds even if no-one ever heard them. This is all so obvious that it is hardly worth saying for a second time.
The earth has existed for 5000,000,000 years, during which it has produced vast amounts of light and sound. To suggest that they did not exist until puny little man came along only last week is...well, if you don't like 'arrogance' then how about 'presumption'?