What it does well
Plans in decades and executes without needing encouragement along the way.
Earth · Cardinal · ruled by Saturn
☿ Mercury in Capricorn ♑
Mercury governs thinking and speech — how you process and explain. In Capricorn, that function takes on ambition, structure and playing the long game — a Cardinal Earth expression ruled by Saturn.
Where it strains
Measures worth by achievement, and struggles to rest without guilt.
Reading a placement properly
Mercury in Capricorn describes a function in a style. It says nothing yet about where that plays out — for that you need the house, and the house needs a birth time. A placement read without its house is half a sentence.