Notes.

I'm about to hop on a plane to China. Be back in a week.

Pathfinding.

• Bill Simmons is going to HBO.

Building.

• Me, on the challenges of fixturing 3D printed parts so that you can post process them.
• Proto Labs is releasing an integration for Autodesk Fusion 360; the walls between design & procurement are slowly being eroded. Proto also announced a big investment in their Fineline 3D printing department.
• Tesla is currently using 10% of the world's lithium ion battery production capacity.

Logistics.

• A pretty cool visual explanation of the Magnus effect, which explains how curveballs work.

Evaluation.

• A long and really good article about why women don't play chess. One interesting idea from it: stereotype threat.
• After much prodding from Amanda, I've been listening to a lot of the Hardcore History podcast. It's addictive.
• A good New Yorker video on the most radioactive place in NYC, which is likely to become a superfund site.

Stuff that doesn't fit into my dumb/arbitrary categories.

• AshleyMadison, the site where people go to have affairs, was hacked. Paul Ford wrote some really good thoughts about this, which I recommend.

And.

Geneva drives convert continuous rotary motion into intermittent rotary motion.