even the SUL hikers on this forum can save a pound or so if someone can figure out a stable isotope of oxygen with fewer neutrons than the usual O-16.
Think like heavy water with deuterium but only this could be called light water. It'd chemically be identical to regular water.
But it could weigh 10 - 15% less since you've removed many of the useless neutrons which play no role in biology or chemistry anyway.
How can anyone here call themselves a minimalist or ultralighter if they continue to lug inert deadweight neutrons up and down mountains after reading this?
once you've lightened water, you've just started.. aluminum and other materials have an even higher % of useless neutrons than oxygen.