he basically brings up a point about how thinking about individual object
lifetimes is oftentimes missing the whole point and using things like arenas can
overall simplify your program because you end up thinking of higher order
concepts, as in which things actually need to be alive at the same time. for
example an arena for per-frame temporaries versus individual lifetime
management, things like that. basically realizing that good system design
involves thinking on a systems level, which involves less individual object
allocations