sentence let's look at it I'll write it down New York is a city right if you have this sentence and let's say yeah actually you're not you're not asked to predict you and your crew you're asked to predict the word a here a right you're asked to predict that in order regressive style or a city it's a better example the two words I said in order regressive style if you predict the word a you can only ever look at what comes before hand whereas if Bert were to predict a just the word a it would be able to look at all of it