Three of Thirty

The known appears to be unreliable
There is food on the ground everywhere
but I keep spending half my paycheck
on ordering in to eat
I know there are places
where this truth is not true
but this just proves my point
The unknown is cattle call
They keep showing up in droves
Scientists are still unsure
of what it is exactly they expect to see
but we've hypothesized
it's just a city they've never seen
....