[Haskell-cafe] Re: Why monad tutorials don't work

On 2007-08-14, Michael Vanier wrote:

I'm reminded of a physics teacher who was having a similar problem explaining the concept of tensors, until he said that "a tensor is something that transforms like a tensor does!".

Which is silly. A tensor is a linear function of vectors and linear functions of vectors. That has implications about its transformation properties, and anything with those transformation properties can be used as a tensor, but this formulation gives the flexibility to say what happens when you're using different bases for different "slots". -- Aaron Denney -><-