I'm not exactly sure of how to even describe this, but have attached screenshots from the Illustrator file a friend sent me, so that I could quickly change the colors of a logo for her. This file came from a designer she hired to create a brand identity, but when I open the file, I am completely perplexed as to how they created the images. She also sent over pngs, which are appearing with jagged, white edges. Any idea of how to explain in the proper design language to her and the designer why this file is unusable?
You seem to have something like this:
Turn antialiasing ON in the Preferences and turn Pixel Preview OFF from the View menu. After doing them the computer screen contains this:
Your images seem to have a mass of anchor points. It's like a bitmap image has been traced. Nobody has time to draw that many manually. The "artist" either thinks you are blind or dumb or he cannot at all draw clean vector shapes with as few anchors as possible.