On Apr 15, 2011, at 10:06 PM, Brendan Eich wrote:

> On Apr 15, 2011, at 9:56 PM, Sam Tobin-Hochstadt wrote:
> 
>> 1. The global object (which is what's originally under discussion
>> here) also gives you "dynamic scope" for top-level variables.
> 
> Right -- this is important and it is a deoptimer

"deoptimizer"


> for optimizing implementations, but they can cope.

It would be even better to not have to cope, so don't get me wrong: efficiency 
win is win.

Anyway, I agree that the main win (your self-proclaimed reason) is to make 
lexical scope go all the way up and avoid typo bugs, dynamic property 
collisions, and worse confusions.

/be
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