1. Markets in everything: selfie masks that look like your face.
2. Orthodox privilege, by Paul Graham.
3. Chess players make bigger mistakes when they are playing on-line (are some of those hand/cursor slips? How much is lack of immersion in the competitive atmosphere of a face to face game?).
4. Derek Lowe on T-cell immunity. And further research suggesting herd immunity sets in much sooner than we used to think (again, these results are no excuse for stupidity and complacency, the urgency to make other good decisions remains).