I would like to see a study with a comparison with non-religious, ostensibly non-discriminatory words. How about just "Shoes"? Then compare that to a few other

I would like to see a study with a comparison with non-religious, ostensibly non-discriminatory words. How about just "Shoes"? Then compare that to a few other packages. One plain brown cardboard with clear tape and a large, crisp shipping label. I expect that will sail straight through all the automatic sorters. A few with various words (some, perhaps, more likely to be found offensive than "atheist", some less) on tape in high-contrast black and white. In addition to "Shoes", you could write "Merry Christmas" (in mid-January, of course), "Green", "Cleveland" (note: the box doesn't need to go to Cleveland), "Dildos", "FedEx" (sending the box by USPS, of course), "Kittens", "Kidneys" (the box shouldn't contain kittens or kidneys, just have the word on it). Then one with a complete coverage of wrapping paper with a variety of words, fonts, barcodes, receipts, invoices, and colors all over the box, and a little smudged shipping label on the bottom of the box. It would be like a Where's Waldo for postal workers: Find the one complete shipping label. See how long that takes to get through!