"Trygve Reenskaug" <trygver at ifi.uio.no> wrote in message

> This means that the same object can play several roles at
> the same time by simply being bound to several keys. Conversely, the
> same role can simultaneously  be played by different objects since there
> can be several contexts on the stack at the same time.

Sounds good.

But can one object play the role Programmer on project 1, and Programmer on 
project 2, at the same time (i.e. the lifetimes of those 2 roles in that 
object overlap) using the same Programmer trait?

Cheers
- Sophie