ITT: a lot of "either/or"
I'm not sure that evolution cares one wit about any of our theories. If it means I'm the dad and I'm the dad more often... then it will be favored.
If I enjoy it more, she enjoys it more or it means that my sperm have increased likelihood of winning... that's all that matters.
And when I say "or" above, it can include any of those things. It need not be exclusive.
Ad hoc and poison the well while being very wide of the mark, too.
Nicely done.
My politics align more with Sanders than anyone well known politician. Surplus is surplus and the left needs to retain the right to call a spade a spade.
Not all infrastructure spend is good. I'm both envious of what they have and stymied by articles documenting unused cities.
For ease of research, I recommend "China ghost cities." Maybe those cities will make sense and not every idea has to work, but that is surplus, ergo excess.