False Dualism

What is meant by contrasting?
One extreme to the other
With no in-between?
It can only be this side or that side.
Always having to be one way or the other,
Black or white, left or right, day or night,
Male or Female, up or down, good or bad,
Inside or out, yours or mine, dead or alive.
But nothing is just one or the other.
Might be more of one than the other,
But not all of one and not the other.
Life is lived in-between,
A balance of all possibilities,
With all, not some, of everything.