Canonical · Design & Engineering · Essay

Form Follows Function

Louis Sullivan · 1896

"A structure's shape should be dictated by what it needs to do, not by decorative tradition — form is a consequence of function, not a separate choice."

The idea

Sullivan coined the modernist movement's founding rule in a single 1896 essay: form ever follows function. Strip away ornament that doesn't serve a purpose, and the true shape of a thing reveals itself.

Why it works

The takeaway — recall it first

Affordances

"Objects and environments don't just have properties — they signal what can be done with them, and that signal is what actually guides behavior, not conscious analysis of physical properties."

James J. Gibson · ModelContinue→