c) A person known to you (could be you, but you don't need to admit it!) who most threatens the notion of native/immigrant in digital culture.

This would have to be my example of the oldest digital native I know, as this person should technically be a digital immigrant. Without repeating myself with the explanations made in the previous post, I think the notion of environmental technology threatens and challenges this theory. By this I mean the amount that a subject is exposed to technology throughout their life affects their ease of understanding of new technology. My digital native subject played Atari and Commodore computers when they were younger and I expect would have known other types of technology. My digital immigrant subject had no interest in technology other than television until the last few years. I believe any experience of digital media furthers our knowledge of new technology. This helps us to implement this knowledge into stretching our boundaries and learning new ways of using media.