[thelollies]

Another possibility... there are plenty of civilisations within broadcasting distance from us that are all listening but not broadcasting for fear of predatory civilisations.

[thefreeman]

that exact possibility was listed in the article.

[thelollies]

That's funny! I read the article and then had that thought five minutes later and thought I'd come up with it. Thanks for pointing that out :)

[chatmasta]

I often wonder how many of my opinions derive from this same mistaken originality... Quite scary, actually.