What do we really know about Elena Kagan? asks the New York Times editorial board.

Whether by ambitious design or by habit of mind, Ms. Kagan has spent decades carefully husbanding her thoughts and shielding her philosophy from view. Her lack of a clear record on certain issues makes it hard to know whether Mr. Obama has nominated a full-throated counterweight to the court’s increasingly aggressive conservative wing.

Ambitious design, I imagine—but is it really to ask where Ms. Kagan stands on every hot-button issue of the day? It’s just such a question that leads potential nominees to avoid leaving any hint of paper trail that could later sabotage them. And Kagan, who’s already had one nomination torpedoed, would appreciate this better than most.

I’m not a student of the Supreme Court. (You may have discerned this.) But the idea that we should know exactly where a nominee stands on every issue that might come before the court strikes me as a modern, and not very good, one.

It means only that invariably we have a partisan slugfest every time someone is nominated, and that such a battle is the way things ought to be.

Presidents both Democratic and Republican should care more about a nominee’s qualifications and her open-mindedness.

Otherwise, we are left with an ongoing ideological war rather than a court in whose merits we trust.