Although Duchamp’s notes on the aesthetic concept he termed the "infrathin" (or in French, the infra-mince) are fragmentary, in their collective bulk they add up to a significant body of work describing otherwise unmeasurable nuances in art, language, life. Blogger Ethan has been collecting these scattered references for about six weeks now.

While the infrathin may not be defined — the coffee grinder grinds ineffably fine — it can perhaps be traced.