We need mechanism to make things smaller and smaller. - Joe Armstrong

This is a letter about a conference. Does it go in letter or in conferences? This is a categorization problem, as soon you put categories into things you don't know what category to use. This is the problem in object oriented programming, this is why object oriented programming is bloody stupid.

We could of course redefine compose to a version of compose that work with debugging with debugging things. That would be horrible. That would mean we would need to compose pure functions. We would need to compose functions for debugging and everything on the planet.

This is fantastic, this a quantum leap in abstraction. Most people are being looking inside the black boxes and trying to understand how they work but I think they are looking at the wrong place.They should have been looking inside the black box to understand programming works and looks on the connected things to understand what do they do.