The final frontier...

So, 'they' are looking for signs that Mars could've had conditions that might've supported life. Of course, being the arrogant humans that 'they' are, they are basing their assumptions on the fact that any other lifeform MUST be like us. They must breathe oxygen; they must drink water; they must have two eyes a mouth, and limbs. They just don't consider that another lifeform might be something so far removed from us, that they are unimaginable. A lifeform that perhaps breathes carbon monoxide, or nitrogen  air...or they don't breathe at all, (I mean, look at fish... am I right??). A lifeform that doesn't eat, or sleep, and looks so far removed from 'us' that 'they' couldn't conceive that they are life at all. The rocks that they are blasting on Mars? Well, maybe they just annialated a whole civilisation. Why not? After all, there are lifeforms here on earth that aren't like 'us' but are still alive. Earthworms, for example,  beetles, centipedes...the list goes on. 'They' need to stop being so damn arrogant, and start accepting that the universe doesn't start and end with us.