Your mind reads for meaning. Usually the context of the writing will give you an idea of what the word means. In other words you can often guess what it means from the surrounding words and the topic.
With PhotoReading you will often find that yuo've already established the meaning.
One of the best reading techniques in traditional reading is to read the glossary first. With PhotoReading you probably would have already PhotoRead it. So why not start activation with the glossary?
Any words that are strange and you don't know the meaning of you can become attracted to so you can look them up; if that is your intention.
Alex