[dwenzek]

I agree.

The post's tone is a bit harsh and could be more respectful. After all, there is no consensus for type classes, [ML's modules being an alternative](https://existentialtype.wordpress.com/2011/04/16/modules-mat...)

Nonetheless, the post is interesting and worth the reading because it raises true questions. For instance, I was surprised to learn that adding a field to an extensible record was no more a feature.