speech reading is very difficult, even for those trained in the skill set. under the wbest case s recenario which is sitting directly in front of someone you know well, who looks directly at you, has no accent that affects the enunciation you have learned, has no facial hair, and has spoken to you enough for you to be familiar with their verbal ticks still only gives you roughly 30% accuracy and a lot of guess work. if you are a skilled speech reader. it's like playing the least fun game of mad libs ever.