Just remember: the article is a generalization. There are many in-betweens and people present much more variation in real life scenarios. In IT specifically, t

Just remember: the article is a generalization. There are many in-betweens and people present much more variation in real life scenarios. In IT specifically, there is a high level of cross-pollination between different areas. Anyone with enough years invested in the industry will have some degree or another of wildcardness to its toolbelt. Willingness to play the role or hire for it will also vary considerably. Compared to other industries, IT is very young and it is still very much possible to be a specialist in more than one thing (just because many of these things haven't fully matured yet). That's considerably harder on areas with a broader legacy such as biology or physics.