on the job if so it's impractical to learn each and everything from scratch for doing this and so instead we want to be able to very quickly learn new things based on our previous experience and finally what if your data has a long tail for example what if the number of data points starts going down significantly as you encounter more objects or as you interact with new people here new words and encountering new driving situations in these situations your standard machine learning systems will do well in in the kind of the big data regime but