> My point was about consistency in descriptor handling, not consistency
> of fault (eg: broken everywhere). I don't understand why that's not 
> clear here.

That is clear but also isn't sufficient motivation.  The proposed change is unnecessary and not rooted in real use cases.  It is a semantic change to a long-standing view that callable() means having a __call__ method.

> The big idea here is to harmonize capability checking with descriptor handling.

That isn't what Guido intended when he designed the capability checking.  He has a remarkably good instinct for avoiding language complexity when there aren't clear-cut benefits.

> http://blog.ionelmc.r

Please stop using the bug tracker to post links to your blog.