// b.sx authors its OWN `pick` returning 2. Taking `pick` as a value —
// `closure(pick)` or `g : () -> s64 = pick` — must capture b.sx's author (2),
// not the first-wins winner from a.sx (1).
pick :: () -> s64 { return 2; }
from_b_closure :: () -> s64 { f := closure(pick); return f(); }
from_b_value   :: () -> s64 { g : () -> s64 = pick; return g(); }