Well This Would Explain Some of Her Decisions

From an AP story on the Supreme Court:

The Supreme Court had put the Texas cases on the fast track, scheduling an unusually long two-hour afternoon session.

The subject matter was extremely technical, and near the end of the argument Justice Ruth Bader Ginsburg dozed in her chair. Justices David and Samuel Alito, who flank the 72-year-old, looked at her but did not give her a nudge.