If you've ever received a fax on standard fax paper, you know just how hard they can be to read sometimes. They do not always come through clearly which makes it near impossible for the receiving end to know what the fax says. Then one person has to call the other to let them know that it did not come through clearly, and the whole process starts again until the fax is readable or another method is agreed upon. I know more than once I've asked for email over fax because it's usually much clearer.