the.com/limits
The fence the universe builds while you're busy climbing it.
means The point past which something cannot or should not go, whether physical, legal, or self-imposed.
from From Latin limes, the boundary path between Roman fields — the original property line, walked by surveyors who knew exactly where one farmer's world ended.
Calculus coreEntire field runs on approaching, never arriving.
Speed ceilingLight's limit is physics, not a suggestion.
Plural by defaultSingular limit feels mathematical; limits feels human.