Re: Emacs learning curve

[Uday S Reddy]

On 7/12/2010 11:03 PM, Drew Adams wrote:

> The question of whether to consider scrolling from the point of view of the view
> port / window or the point of view of the paper / data surface / buffer (which
> is moving?) is as old as the hills.  And the answer sometimes depends on the
> particular application in a logical way (think cockpit); otherwise it is
> arbitrary.

I thought sensible systems always did it from the point of view of the human 
user, ergo human-centered systems.

When I teach, I say "delete left subtree" using my right arm.  Nobody ever gets 
confused.  It took me a while to learn to do it though.

The aerobic instructors don't do that.  They say raise you right arm and 
demonstrate by raising *their* right arm.  People seem to manage ok, but I have 
to admit I do get confused.

So, a human-centered Emacs would "scroll-down" by letting the human user move 
down a document (not move the document down).  The real Emacs does the opposite.

Cheers,
Uday