Flacked barley is unmalted barley that has gone through a gelatinization process to release the starches. So, it really won't give you the same results as starting with raw barley. Also, the difference between roasted & totally burned is very small.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk