What is Space?
We don't know.
Here and There.
Distance, the Basic Notion.
Quantified with a Ruler.

What is Time?
We don't know.
Then and Now.
Change, the Basic Notion.
Quantified with a Clock.

What is a Ruler?
A Counter of Repeats of an Unchanging Distance
From Heel to Toe, a Foot
And Length is the Repeat Counts

What is a Clock?
A Counter of Repeats of Constant Change
From Evening to Morning, a Day
And Time is the Repeat Counts

Space and Time
Ruler's and Clock's Measurements
Conceived in Distance and Change
Presented as Length and Time
But Distance and Change remains
Unknown and Unknowable.
We don't know,
We don't know,
Maybe
we'll
never
know.