> Jumping to the conclusion of "it's aliens!" is unscientific and really a bit tiring. It kinda seems your jumping to conclusions, "sign" is not the same thing

> Jumping to the conclusion of "it's aliens!" is unscientific and really a bit tiring. It kinda seems your jumping to conclusions, "sign" is not the same thing as "evidence". Sign is basically increasing the perceived likelihood, but it may mean an increase from e. g. 0.000001% (baseline) to e. g. 0.001%. Add some other signs like presence of water, radio activity etc. (each of which alone is no proof of aliens) and you can get interesting candidates.