Is knowledge like food?

They say a  little knowledge is a dangerous thing yet a great deal  is good.Is knowledge unique in this matter of size?  A little is bad a lot is good…… maybe like kissing?

Many times though, it’s good to know just enough.Then you have to define “enough.”

Is knowledge a bit like food?

How do you know when you have [had] enough?After being sick a few times that will  prove a test….can knowledge make you sick?People certainly though you could have too much book learning,like Hamlet