The porting was obvious, the switching was not. It was obvious to me, knowing that MacOS is based on NeXTStep and how that ran on a bunch of different architec

The porting was obvious, the switching was not. It was obvious to me, knowing that MacOS is based on NeXTStep and how that ran on a bunch of different architectures—68000, Intel, Sparc, etc. I even wrote 3 years ago here on HN (before Apple announced their transition to ARM) that I wouldn't be surprised if there were ARM-based Macs in the lab [1]. And also knowing that Apple always wants to be in control of as much of the technology they rely on as possible. After Motorola/IBM dropped the ball with PowerPC and Intel couldn't deliver the performance per watt they needed, they weren't going to fooled a third time. [1]: https://news.ycombinator.com/item?id=21235236 https://news.ycombinator.com/item?id=21235236