[steveklabnik]

I would certainly agree that it is a pressure in that direction. But like anything, you take the design constraints you have, and do the best you can with them. Paralysis is not the only possible outcome. Accepting that nothing is ever perfect, that you will make mistakes and then have to deal with it later, and that's okay, is another. There are many instances of the latter happening over the history of Rust's development in the past. It would be nice if the Project could figure out how to strike that balance again.

[infogulch]

There are two ways to take it, "Rust will never have a 2.0 ... therefore everything added to it must be perfect." or "Rust will never have a 2.0 ... so don't try to force it to be something that its not and lets make Rust the best it can be."

A language with Rust's priorities but designed with an effect system from the start could be epic. But Rust is not that language and maybe it can't be. And that's ok. We can give Rust a pass since effect systems weren't even invented yet when it was being designed.