His native language is English. He's just sloppy. He's been in Sweden for decades and speaks Swedish with a typical English accent. Source 1: My opinion. I've

His native language is English. He's just sloppy. He's been in Sweden for decades and speaks Swedish with a typical English accent. Source 1: My opinion. I've met him many times. Source 2: His thesis states that he started at the Ericsson CSLab in 1985. CSLab was in Sweden. Source 3: This (http://www.cse.chalmers.se/~rjmh/Armstrong/bits.ps http://www.cse.chalmers.se/~rjmh/Armstrong/bits.ps) set of slides states that he has a B.Sc. from UCL (London) from 1972 and started at CSLAb in 1986 (not 1985, seems the dates are a bit fluid).