Cheryl Conrad no longer seethes with the frustration that threatened to overwhelm her in 2006. As described in IEEE Spectrum, Cheryl’s husband, Tom, has a rare genetic disease that causes ammonia to accumulate in his blood. At an emergency room visit two decades ago, Cheryl told the doctors Tom needed an immediate dose of lactulose to avoid going into a coma, but they refused to medicate him until his primary doctor confirmed his medical condition hours later.Making the situation more vexing was...