The Earth spent billions of years without life.
Nope. Hardly one.
Yet it arose. Consider that emergent properties
can be the result of lengthy stochastic processes,
with stages of properties. Just as single cell organisms
preceded multi-cellular life, hunter gatherer nomads
preceded countries with governments & capitalism.
So we can say that nations are a result of life?
Or of gravity? Or that god planned them right
before the beginning of the universe?
Yes, we can trace all things human also back to the
Chicxulub asteroid, but is that what you'd call a
reasonable and/or parsimonious connection?
Is everything that happened something that must have
happened?
Is war always a result of capitalism just because some
(well, almost all) capitalist nations at one time in their
history start a war?
You & he can argue that there's no tendency towards
capitalism because long ago there was none, but
that would be to ignore current reality.
Socialism has the emergent property of oppression
& poor economic outcome. This is another reality
worth being aware of.
Correlation is not causation.
When you can't explain the mechanism that lead
from B to C and that that mechanism is inevitable,
you don't really have a case.