relativity III

the laws of Newton just approximate
the special case where space-time's nearly flat
but Albert Einstein dared to formulate

the broader rules regardless where one's at

subjectively, a century's ticked past
since he first published relativity
coordinates can't but conform to mass
attested by the path of Mercury

no rail embankment's constant as a rock
by which to calibrate measuring sticks
and now Lorentz has smashed our very clock
the rest can change and only 'c' is fixed
yet fuzziness still dogs the smallest size
until we know if gravity's quantized