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Open Questions

Things this atlas does not know. Each entry is a question that specialists have posed and not settled, recorded with what would actually resolve it and which expertise the answer needs.

These are kept deliberately, rather than quietly omitted. An atlas that shows only what it is sure of implies a confidence it has not earned, and the gaps are often where the interesting work is. Several sit exactly where two fields fail to meet: identifying the hyssop of the Hebrew Bible needs a botanist and a philologist of Biblical Hebrew, and neither one settles it alone.

Grouped by the kind of thing the question is about, so you can go straight to the entity type you work on.

Showing 21 to 21 of 21 open questions, page 2 of 2.

Not Yet Classified 1
This Entry What year, and by whom, did the razor-and-blades pricing model actually emerge?

Why It Is Open The razor-and-blades model is popularly attributed to King Camp Gillette around the time he patented the safety razor, but Gillette's own razors were priced high when introduced and only came down after his patents expired in the 1920s. General encyclopedic sources credit the pricing pattern to his competitors rather than to Gillette himself, without naming a specific year or company for its first deliberate use.

What Would Settle It A business history source that names the specific competitor firm and year that first deliberately priced a durable good low to sell a proprietary consumable at a markup, rather than a general encyclopedia entry that only debunks the Gillette myth.

Expertise Needed Business History

Question posed in Wikipedia, Razor and Blades Business Model, History section.