Yes, your pictures were view-able when I first read your article and I can see them now. I didn't realise that there was a problem with them. Perhaps if you can't see them yourself the issue is with your browser. I'm using Chrome if that is of any help.

You're right about people 100 years ago and how they might view our technology. If you look at science fiction from the early 1900s you can see that it really isn't that far off of what we can do now. Even certain aspects of science fiction from as late as the 1960s with Star Trek has already become scientific fact in terms of our handheld communication devices which are also powerful computers. Even genetic modification which they mentioned when they talked about the eugenic wars isn't too far wrong in terms of the ability of scientist now.

As to a hunter-gatherer society worshipping or fearing us, you're completely correct. As you know, if we look at anthropological studies of recent hunger-gatherer groups (not that there are any who remain unmolested) or just less technologically advanced people still living today, we can therefore get a sort of idea how people who lived thousands of years ago might have seen us if we had turned up. It's not outside of the realm of possibility to believe that ancient cultures were in fact describing aliens in their limited way when they described their gods.