experiments you need for example build some I don't know very very hard experimented start to establish and there are lots of lots of stress this is a need and it is hard to repeat it frequently and that is why it is also could be expensive a time consuming so it's kind of basic reasons why why we have such deviations with a small label data and here is a quote by entry in there it is not who has the best algorithms that wins it has the most data and probably it is much more crucial nowadays when there are lots of