Nullity (was: User model stacking: current status)

[Brian Goetz]

> I'm not sure of how much help I am to your gauging interest, but hope 
> it could,
> at the very least, be a small indication of how users of other 
> languages may
> find the ideas brought up.

Oh, trust me, we're well aware that millions of Java developers would 
jump for joy -- at least, initially -- if we pulled this trigger.

My concern is what they do _after_ that.  Giving people something that 
looks superficially like something they think they like from another 
language does not always create lasting joy.  What happens in the first 
five minutes is much less important than what happens in the following 
ten years.