Mark Inglis, a former mountain guide who had lost both his limbs to frostbite in his twenties, now in mid-life,
already an Olympian (silver medal in the 2000 Paralympics) and a winemaker, reaches Mt Everest and proves that (1) the power of an individual can move mountains, (2) that technological progress matters and can be put to good, peaceful use (3) that a caring, inclusive society can work miracles.
Still, I have observed many 'able-bodied' fellow citizens who find it so hard to walk.