It depends on what you are talking about.
The reason why it has to be done a certain way.
Some things, how it is done. Other things, what is done. I was working on the road while they were building a bank and every day when I'd pass it, I'd see a different stage of the construction. But the vault was most interesting to watch. They put up a fr
But a large cathedral? I'd much rather see it than the stages of construction. :)
Depends on what s being done. I generally look at the "how" before the "what it does" though, so I guess I am going to say how it is done.