Wealth = Cash to buy stuff with
People don't cognize bridges, waterways, roads, public spaces, dams, electrical power lines, the rule of law, reservoirs, national forests, national parks, public order, and public health as wealth.
And that's just the government; private sector wealth dwarfs it by some (unknown to me) order of magnitude.
Some people would say that citizen Capet was beheaded on Moss Day, Duodi Pluviose, Year I :) -- $E(X_t|F_s) = X_s,\quad t > s$