> you can write fast code just as easily as you can write slow code I think some people can do this and some can't. For some, writing slow code is much easier,

> you can write fast code just as easily as you can write slow code I think some people can do this and some can't. For some, writing slow code is much easier, and their contributions are still valuable. Once the bottlenecks are problems, someone with more performance-oriented skills can help speed up the critical path, and slow code outside of the critical path is just fine to leave as-is. If you somehow limited contributions only to those who write fast code, I think you'd be leaving way too much on the table.