useful and you really need to carefully initialize and use things like AK norm for good numbers so that's that's another negative because it may not be directly usable for another modality or another data set or another kind of architecture so let's look at late engraver models will see the various different be strengths and weaknesses and what have been some visible successes in bas it all started with the original Emnes modeling by dirk Kingma where you could see various types of digits and strokes and the slopes of the strokes