@cicerone imposter,
Let's take another look at what Mr. Dictionary and the rest of the world have to say about 'spatial'.
Spatial –adjective
1 Of or pertaining to space.
2. Existing or occurring in space; having extension in space.
Ah, it has all come clear to me now. 'Numbers' are in space, and that's why we can't find them!!
Oh wait, but what about astronauts? Haven't they been in 'space'? You think they would have mentioned to Houston about how they almost crashed into the number 6 on their way to the moon.
Or are we talking about the 'space' inside our world? Well when I look out my window I surely don't see any 'numbers', also I've never seen or come across any along my travels of this great 'earth'.
So, where are numbers?