I am always tripping over my feet when I use Dask. Definitely due to inexperience (I only reach for it when my usual Pandas tricks fail me), but I never have a good time there. Pandas idiom X will still blow up memory, you have to know Dask idiom Y, etc.

I am glad Dask exists, but it is not a seamless solution where you can just swap in a Dask dataframe.