[professor_v]

They don't explicitly state that the rewrite is better? They just mention that they reduced the amount of code from 160,000 to 85,000 lines.

Using competing teams for this purpose seems like a waste of money to me.

[swsieber]

It could very much be from the second system effect though. A rewrite in C++ from a competing team would provide a control for that.

As many others have mentioned though, the real kicker is that they did attempt a rewrite twice in C++ aiming for the features of the rust one; those didn't work out.

[nickelcitymario]

> Using competing teams for this purpose seems like a waste of money to me.

You're not wrong! My point was more that we can't take this single data point as proof of Rust's superiority.

[dblohm7]

> Using competing teams for this purpose seems like a waste of money to me.

That's not how it was done.

[waheoo]

You're making some big assumptions here and I don't think you even realise it.