I can concur with this. I am actually the youngest NeRD (NeXTStep Registered Developer) ever. I also programmed Mac applications professionally from just before

I can concur with this. I am actually the youngest NeRD (NeXTStep Registered Developer) ever. I also programmed Mac applications professionally from just before OS X until after its release. I remember first seeing the API docs for it and being flooded with memories of code from a decade earlier. It was a bit weird. Keep in mind that besides the API, I also already was well versed in Objective C, so it was also not a new programming language. My peers had different experiences.