"To prove his point, Myers asked 48 fellow students to run searches on a computer database, with and without a progress bar for guidance. (He used a capsule that filled from left to right — like a giant thermometer from a charity drive, tipped on its side.) Then he had them rate their experience. Eighty-six percent said they liked the bars. “People didn’t mind so much if it was inaccurate,” Myers says. “They still preferred the progress bar to not having anything at all.”
Some of the views my team shares take 20-30 seconds to load on our 8 core Tableau Server. I do believe that a progress bar would help folks deal with that kind of delay.
From a story in this Sunday's NYTimes Magazine section.
Full story at: http://nyti.ms/1dzne7G