My partner has (she says) treasured my comment to her once that the second derivative of her emotional plane is very low. I meant that she is very stable and doesn't suddenly fly into some weird emotional state. I couldn't think of any other way of putting it.

There's a joke in there about third derivatives of displacement (jerk).

What's the term for encountering some relatively unlikely concept multiple times in a short period? I was just looking at the Wikipedia page for the physics-variant of "jerk".

Baader-Meinhof Phenomenon.

That's the same one. I meant third derivative of position which is the derivative of acceleration, which is "jerk".

Latency throughput tradeoffs is the one I always seem to be trying to explain to non CS people.

I'm frequently frustrated when I'm trying to do chores, or something else, with someone who doesn't understand the concept of parallelization.

Haha, I once got into a rather frustrating discussion with my partner when discussing the optimal order and partitioning of laundry loads so that we spent the least amount of time babysitting the washer and dryer. After our third digression into understanding the concept of pipelining I decided that saving 30 minutes per week wasn't worth it :)

Laundry is the exact chore I was thinking of. Mine folds (e.g.) a few pairs of shorts, and then takes them to the dresser and puts them away. Then later, she folds more shorts, and puts them away again.

I fold everything, once, and then make one trip per handful-of-piles-of-items. Precious seconds saved! Seconds that I can use to have pointless arguments about saving precious seconds with my wife!

Yeah, but with her agile, small batch approach, if she makes a mistake on any one folding, she minimizes the amount of rework.