Directors guests reach for

The third column does not move a single one of these 30 lines, and that is the most reassuring thing on the chart. Crediting a box set only to the directors who made at least 33% of it costs nothing at the top of the ranking: everyone here was already reached by exactly the visits that chose them. The rule only ever decides cases like Charles Kiselyak, who made one making-of inside the Cassavetes set and would otherwise outrank Godard on it. All three count visits, never films, so a box set of thirty-nine cannot outweigh a taste. The middle lens credits a box set only to the directors who made at least a third of it, which is why a director can be reached by many visits and chosen by none.

Furthest climb between the first count and the last

These are the directors the collection reaches for almost entirely through box sets. Agnès Varda has been taken as a single film once and walked out of the room 24 times. Jacques Tati and Eric Rohmer have never been chosen as a single film at all, which is what a films-only count would report as never being chosen. Some of that is the packaging rather than the taste. For 9 of these 10, every film of theirs in the collection also sits inside a box set somebody has taken, so their whole shelf was reachable without anyone choosing a single film. Whether a standalone edition existed to choose is not something this site reads. And Agnès Varda was taken alone early: 22 of the 23 visits that reached them through a box came later.

Wong Kar Wai has 7 films in the collection and 10 picks, and every one of them is the same film: In the Mood for Love. Jean-Luc Godard, reached about as often, spreads 35 picks over 14 of 15 films. A ranking by visits cannot tell those two apart.

Effective films is 1 / sum of squared shares over which of a director's films the single-film picks landed on: ten picks on one film gives 1.0. It cannot exceed min(picks, films in collection), so the raw number partly measures how much shelf a director has and evenness normalises it onto that ceiling. Box sets are excluded, and that is the point rather than a convenience: over the expanded lens this measure ranks a director by the size of the box set they are in, which expanded_artefact shows directly. Directors need 8 single-film picks and 3 films in the collection to appear. Films in collection is the shelf as it stands today, so a director whose films arrived recently had fewer visits in which to be spread across them.