Invetigation in Process 1: JOptionPane DTs

It seems that we can popup a JOptionPane from a background
thread in a SwingWorker without the sky falling in. "But why?"

Ps. The title of this series, "Invetigation in process" comes from an episode of The Office
when "Gareth Keenan Investigates!" but mispels "investigate" on his makeshift sign which
for his "office." Heh heh. Hee hee. He He. Hmm.