As always, when Rick loans the blog for a bit, I’m inevitably surprised by how much work it can entail, and humbled by the fact that he’s at the helm day in and day out. So I’ll close my guest stint with another note of profound thanks for his regular stewardship.

And thanks as well to Derek Muller, whose steady hands will be steering for the week to come. I’m sure he’ll welcome the tips and suggestions as well.

Derek, she’s all yours.