The global object should not be the "global scope instance object"

[Brendan Eich]

Andreas Rossberg wrote:
> What are you proposing for module bindings then? They would have to be
> visible later on for the "use modules" excuse to work. Do they
> clash/shadow/overwrite?

You're right, it doesn't pay to try to fence off 'let' and 
'const'.Indeed your next reply (to Allen) convinces me that nested is best.

/be