Aliens r coming....

[Who2]

Whist working round the flat I heard the end of a programme about aliens or something.
"Their are far more "close encounters" these days than ever before."

Question ?

There is an average of 8 billion people walking around this Planet, fact..

There is an average of 15 billion mobile phones around this Planet, factish..

So how come all these people that film everything at the 'drop of a hat' haven't filmed any Aliens, or saucers ?
'Just saying....

Ps: I often spot aliens walking down our market....I take my camera tomorrow...