>> Nevertheless, I'm pleased to report that our v8 folks agree that if
>> Mozilla does this and does not back off because of compatibility
>> problems, they will do so as well. Thanks for being brave enough to
>> jump into this pool first!
> Water's fine, really!
Client data point: OpenLaszlo's class system relied on writable
__proto__ back in the day. We eliminated that dependency about 4
years ago to make our code more portable across browsers (and in
anticipation of utilizing "real" classes for runtimes that supported