Earlier quoted context omitted.
> The signal itself looks like a parabola when graphed, gaining in intensity and then falling off at the same rate. Exactly what you'd expect from someone walking across the field in front of it. Also exactly what you'd expect if aliens were beaming a search signal into their sky, no?
Yes, but one is far more likely.
My theory is that the government was planning to cut funding, and to stop that from happening someone deliberately created the interference. That's more likely than aliens going extinct after sending one single message.