Marcus,

I'm surprised to see you making such outrageous and ridiculous claims:

> [1000000 timesRepeat: [Object class]] timeToRun
>
>  With special bytecode:        514
>  Without:                                  579
>
> So it's around 10% slower.

More likely (given our micro benchmarks) the difference is a factor of ten 
(message send vs. byte code).

Cheers,
  - Andreas