2017-07-17 3 min read


All links today :)

Planning & Strategy.

Making & Manufacturing.

Maintenance, Repair & Operations.

  • Roman concrete, which contained a combination of seawater and volcanic ash, produces tobermorite and phillipsite as it ages - minerals that help fill any cracks that develop over time.
  • On the hostility that NYC MTA workers (who are certainly not at fault for the underfunded system's woes) endure on a daily basis.

Distribution & Logistics.

Inspection & Testing.

  • A good post on geometric search engines, which (similar to a Google Image Search) allow the user to query a database of geometries directly rather than via metadata. One use case I've heard of for these is for helping CAD systems automatically fix issues caused by changes far back in a feature tree; if the system knew how the old shape looked & acted, maybe it can make a good guess about how your new shape should look & act as well.
  • Related, Octopart adds robust categories & filtering!
  • A real takedown of Blue Apron's economics. An interesting idea: "Because Blue Apron cannot retain customers for extended periods of time [that] means that customer acquisition cost is effectively part of cost of goods sold."
  • A geographically accurate NYC subway rail map.


How to keep train conductors alert: Have them point at a checkered sign at every subway station.

Thanks as always to our recurring donors for supporting The Prepared. Credit also to Jonas, Dan, Reilly, Andre, Dan, Andrew, Aziz, Dan, Blake and Gabe for sending links.

Love, Spencer.

p.s. - We should be better friends. Send me a note - coffee's on me :)

p.p.s - If you know someone who does good work - especially if they're a minority in their field - please share The Prepared with them! And see our inclusivity policy here.

Spencer Wright
Spencer Wright
Spencer Wright is the (mostly accidental) founder of Scope of Work, which he started writing (as The Prepared) in 2013. Today he serves as its editor-in-chief and chief dilettante.
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