On Borrow Checking

[claptrap]

On Wednesday, 30 April 2025 at 02:58:37 UTC, Walter Bright wrote:
> On 4/29/2025 6:26 PM, jmh530 wrote:
>
>
> We spent a considerable time thinking about safe 
> reference-counting. We could not find a way around its 
> considerable performance penalties, and its unsafety, and so 
> abandoned it.

Why is safe ref counting not feasible with D?

Wouldn't the fact that most data is thread local in D mitigate 
the majority of the performance penalties? You dont need atomic 
inc/dec if its thread local do you?