He doesn't have to be psychic to hear what Edgar's thinking. Radar's thinking it, too.

"'Course I coulda." A little louder, and a lot more pitchy, the way his voice always gets when he's upset. "I was the clerk, I knew everything, h-he didn't even have to ask for most of what he needed 'cause I always knew right away. So how come I didn't know? The only time I had no idea and it was the most important thing he ever needed me to get for him."

He hugs himself tighter against the cold.