And actually makes for a fun climbing place for them
> From getting shitfaced on stolen whiskey to attacking politicians and stealing files from government headquarters, India's monkeys have gone bananas.
It can't predict y' properly if it's trained for y. whether it has to be re-trained really depends on y vs y'
if y' is an extended version of y, you might be able to continue training with new data and classes without much problems, but if y' changes something in y, you'll probably have to start over