Nige,
....so is that an option a) or an option b) ?
Re-top-down, bottom-up
From the top, there is neither Dark nor Light. It is only Dark, because there is no Light.
From the bottom, It is either Dark
or it is Light.
From the top, there is neither Safe nor Unsafe. It is only Safe, because it is not Unsafe.
From the bottom, It is either Safe
or it is Unsafe.
(Old Scottish proverb circa 2008)
sorry couldn’t resist….