Caveman changes how Claude talks. Cuts articles, filler, hedging. ~75% fewer output tokens, same technical accuracy. Code and errors stay exact.
Ponytail changes what Claude builds. A lazy senior dev who asks "does this even need to exist?" before writing anything. Stdlib over deps, one line over fifty, shortest diff that works.
One governs the mouth, one governs the hands. Stack them = terse explanation of a minimal solution.
Which are modes do you find the most success with?